Tony D

EXCELLENT COMPARO PHOTO! I think that one should be given it's own title (How to spot repro headlight covers) and stickied in the body section! That is an EXCELLENT visual aid. Really makes the point what is right and what is wrong. Now I got to do a side-by-side with mine! LOL

"Quicker Response" as opposed to what? A misapplied single? There is no reason twins are more responsive that a properly sized single. The largest reason for twins in the past was compressor flow. To get comparable flow and lower spool, you had to have two smaller compressors with relatively large compressor sections. With the advances in wheel design, and materials advancements twins really are superflous. They have to be very well applied, and even then it's likely a wash when you consider potential failure points compared with a proper single. Really 'quicker response' is a theoretical argument, and then only really proven by using turbocharger tachometers, and sophisticated instrumentation... practical application will show there is no real discernable difference with the current generation of turbochargers. It really is more for novelty these days than any practical application argument. If a single can give me 17psi boost at 1700 rpms and 21psi by 2000, pull hard to a power peak at 5800rpms (around 350HP) you will be hard pressed to give me a practical example of twins beating that power under the curve. And that was old tech, without a hybrid compressor section. Were I to make that same build today, and actually port the head and use a cam the power point would be even higher. I have learned a lot since I built that one in 1986... using 1983 OEM technology. Today's turbo technology would improve on that response by a considerable margin.

No block involved, just this particular Z-Head. Your weight may be different...

JeffP already has a steel centered unit from BHJ, they can make one, they already have. The thurst washer issue was why most JDM high HP cars ran multiple disc clutch assemblies and just dealt with the overhaul cost.

'Forced to Watch'? Let's be honest...Phil...'forced?'

This particular Z-Head weighs in around 146 to 151 Kg... Less after 3 weeks in Morocco during Ramadan, then this Z Head weighed 128 Kg... Travel Suggestion: Morocco during Raman is not a suggested location for tourisim.

1991 you say? Hmmmmm... Why was I not informed of this contest? I could not compete with birdcage bro, but that first guy that was shown... he had peach fuzz compared to what I was sporting in '91! Hell, I kinda had hair then as well!

I about died when I saw the tools the Taiwanese and Vietnamese guys were using in the training classes I was giving them: "KING TONY" I have yet to find a decently sized set that I can buy to use myself. I GOT to get a set of them, just to keep in the car to show off to the ZCar crowd... I mean, they were at SEMA this year, and someone who had called "BS" on me couldn't wait to call and tell me that (at 3AM my local time...) http://www.kingtony.com/idx.asp

I don't call the pet police on my Vietnamese Neighbors, they keep their mouth shut about what I do. We have an arrangement. For some reason they distrust any form of governent as well. I can't imagine why... You and me are probably some of the few who know what a 'bucket calf' is! LOL I mean, first time I heard the term 'companion animals' for the old and infirm, and saw that they were giving out dogs and cats, I was sorely disapointed. Anybody who's anybody knows the perfect 'companion animal' for any man is... well... A SHEEP! When that stupid law passed (I voted no) my son asked me if we were now breaking the law with our turkeys, named 'Easter,' 'Thanksgiving,' and 'Christmas'...

Them lifetime residuals man! It's what keeps us going in old age! Remember SAG/AFTRA wants their cut, don't forget to pay those dues or 'you will never work in this town again!'

Underpants? People wear underpants? I guess some are just beind the times. There have been 'oil free compressors' for some time. No need to change oil, if you don't have oil! By the same token, likely there have been 'underpants free humans' for some time as well. Probably the same logic applies. That's as far as I'm going with this other than to say 'check out the celeb photos in The Star'...

I use that same logic for noobs who are intent on 'rebuilding' a junkyard motor that uses a qt per 1000 or even 500 miles. You can buy a LOT of oil in 100,000 miles and still be ahead on a proper overhaul. Best just run it as it is and save your money for the performance overhaul you are going to do anyway in about 40K miles! LOL MY OIL CHANGE STORY (and likely similar to Big Phil's buddy with the truck!): Family went to mass Saturday so we didn't have to worry about the mess on Sunday getting out of town to Saginaw. Got up early on a cool Sunday morning to make the drive to Saginaw, and the 1977 Impala started, but the 'oil' light was flickering. Dad revved it, but it wouldn't go out. So pop the hood, check the oil. Nothing on the stick... Hmmmm... Put in a quart.... nothing on the stick. But starting and the oil light is now out. Adds another quart: Nothing. Hmmmmmm... "We want to go to Saginaw Dad!" Dad sees the open pan of lawnmower oil I had drained earlier in the week, we pour that into the car 'for insurance'. Drive to Saginaw, and Back. Quickie Lube Places had not really taken off as Manguson-Moss only passed three - five years before. And it was Sunday, most were closed anyway. 150 mile round trip+ Dad concedes 'all right, you can take it to the Auto Shop at school and do an oil change' (he was not a big fan of my taking Auto 1 and 2...) I get it up on the rack, with the shop teacher standing there as I drop the plug and glorp, glorp, glorp, dripdripdripdripdrip... that was it. Shocked, Mr. McArley looks wide-eyed into the drainpan. "Stick a coarhangar up in there, it must be sludged up." Do so, nothing. We drop the filter, and it's full of oil. He says "Please tell me you drained some before I got here." I tell him the story, he's like: !!! Now the car makes the 1.5 mile drive back from school to home. Dad drives it maybe 2.5 miles or so to work the rest of the week. Start-stop short drives in cold weather. Next weekend we repeat the Saturday night ritual, and this time head to West Branch (at the time the VD Capital of Michigan, FYI) about 30 miles distant along M55. We go to the mall there, and spend the day shopping. We start back, and not a mile down the road, the ole Impala starts Mosquito Abatement fogging out the tailpipe. I mean WOAH! Dad is NOT happy. Very accusatory tones about 'what did you do goddamnit!' I'm lost. Can't figure it out. We stop halfway home to check the oil, and add three quarts to get it on the stick again. More accusations about my competence in counting to five, etc...I mean I FILLED IT! Honest! I don't know WHERE it could have gone! (At least not THREE QUARTS in 15 Miles!!!) Dad cussing and grumbling under his breath about his mistake letting me work on the family car. He takes the LUV and has me drive it over to the local independent place "Herb's Garage" (I wonder if he knows Joe?) Monday afternoon comes around, and Herb says 'got it fixed Al, have you and your son come over I have to show you what he did wrong...' I'm dreading Herb's excoriation, he's like a million years old, and regularly made us young pups look like fools by simply connecting distributor wires to coils to produce spark, wiggling battery posts to fix broken starters and solenoids. You know, all the black magic old white guys seem to do to infuriate teenagers by making them 'look like idiots' in front of all their friends. (That we actually were idiots does not occur to some for the rest of their liftime!) I get there, and Herb brings us over to the Impala. "This was the problem Al" and points to the left bank of the engine which has caked parrifinand black sludge over the rockers almost in the shape of the Chevy Valve Cover on the car. Right side is clean, they had scooped it out, and put a wire down the drainback holes. "Al, you say your son was all over you to do an oil change... Well, my suggestion is you take your son's advice about your cars more often because you sure as hell don't know f-all about maintaining them! You got this sludged up engine because you aren't chaning your oil often enough and taking all these cold weather short trips. The drive out to West Branch with a FULL oil pan let this stuff melt down and plug the drinaback holes when the engine cooled. When ALL the oil came up to the top end of the engine once you got up to highway speed on M55, it just pumped down past the valve seals. It didn't do it in town because you were just idling, anything that pumped up there had time to drain back again. (looks at me) You didn't do anything wrong, you just didn't know this was common with people who don't maintain their cars like they should. (back to dad) I'll have Jeff scoop this side out and write up the bill. By the time we're done in the office, he should be finished. (looks at me again) You can stay out here and watch, so you know what to do when your dad doesn't listen to you again!:mrgreen:" They go in the office, and I see Herb pointing out to me, and the bill, and shaking his finger at my dad. I drove the LUV home, dad drove the Impala. Nothing was said to Mother, save a somewhat guilty 'Herb Fixed it" from my dad. At 46,000 miles, while starting the engine at school #6 exhaust valve dropped right off, and wrecked the engine. That one was 'my fault' too, at least this time there was no hesitation "Push it around to the Auto Shop and get it fixed." We ended up swapping it for a 79 Impala with 76K miles on it from Florida. So much for the Corvette Heads, Distributor, and Intake I had planned for the old Impala...

I'll admit it, I sent it on to my wife... "Maybe this will get a Z32 in the household...." Unlikely, but she said she always wanted a horse. Here's FOUR of 'em, and no crap to shovel and no stalls to clean, and grain to mix, and.... "A horse is a hole in mid air supported on four spindly legs which can break easily. Into this hole, you throw money which never returns. If one of the legs breaks, you shoot it, and the hole still takes money to process if you want to eat it afterwards." By this definition, a horse is more beneficial than a car, insamuch as you can eat it afterwards... except I live in California, and they passed that law that you 'can't eat pets' so the nod, logically, goes towards a CAR instead. At least that has always been the argument to the wife about the horse thing...worked for 25 years so far (come December 22nd!)

Confirmation would be appreciated, thanks!

sharkie73z AT yahoo DOT com I started the second machine today late, so that means monday begins the countdown. And I won't be in the office with Okamura, either... I can give it a shot. But likely I got less than a week here now...

Some from Canada would argue that twin 90mm t/b's would be a nice addition to that setup. Hey, bigger is better, right?

I just read this, and if this hasn't taken a Z Car.com twist I don't know what has, I'm off this thread. I never said a GD thing like that. How someone can make that statement after what I wrote is beyond my comprehension, and frankly I'm disapointed that it comes up here. Terribly disapointed.

AHA! The Honda TB's (as most nissans) are say 500CC a cylinder. Didn't the Z31 have a 55mm tb, and the VG30DETT have dual 50's or 55's ? The s2000 went down in size? It's a long stroke motor that revs higher than most of the street stuff out there... cam on the pulley does some stuff, but what are you asking about since they dropped the diameter? Looks like something is at play there. But remember we are talking TURBO here as well, I don't know of any OEM Turbo or forced induction S2000's... Cylinder sizing may be part of the equation. But you are showing 'peak' hp of only 4hp lost. I have seen similar numbers on dynos where you pick UP 20 hp due to whatever reason lower in the powerband. This is what I was getting at, maybe this is a 'drag racing' part, and give s you 'peak' power, but there is a midrange sacrifice. Without dyno testing, it iwll be hard to quantify, though. Bozoku pipes are not the same as running a 475 RW KW car around. Please give me credit for not making outlandishly stupid comments. If someone wanted to put Bozoku pipes on their car, I would not have a problem with it. But someone with 475 kw to the rear wheels (you do the conversion) kinda tells me they have a reason for it being there. Especially now that I can see 658HP on a 3" pipe may be a practical limit. And again, if the guys at E-Motive tell me 'use at least a 4" on this horsepower level' I'm figuring they're not Bozuku fans... You appear to make a link between the inlet size and outlet size orifices, which I can only figure is a joke, I won' t even try to explain how wrong that is on so many levels. Frankly for Turbochargers, NO exhaust is the best exhaust, and that has been proven in several dyno runs by severl independent indicviduals. So no, I don't think a 4" exhaust is overkill. a 3" exhaust on a BONE STOCK ZXT returned 20HP gain with no drop on the bottom end. For Phil's car, I have no doubt the 4" is being utilized, and there is not a chance it's restricting the output on the top end. A 3" pipe on the other hand, as he approaches 600HP to the rear wheels may start being the lower limit of acceptable sizing. You seem to be confusing questioning why with criticizim. It's not, it's asking for a reason. If you think a guy saying all the American Roll Cages are constructed out of 'steam pipe' and consider that a mild form of heat, I don't see anybody going that far at all. Not even JeffP in his statement. I dont' see any 'heat' just some guys asking why, and what has anybody quantified. As stated before, this isn't 'Accessorize to be Feared' website. Rest assured there is plenty of stuff to criticize with the roll cages because it's a more defined art with more people familiar with it, and given examples that work and what don't. Not so much with TB's...and then there are those that will defend something when it's not under attack. If I want to criticize work, there's plenty places to do that. I come here to LEARN, and I asked WHY. Can you get it though your head this is NOT criticizim, it's asking for REASONS... some shred of empirical evidence outside of 'it looks badarse' to put one on MY PROJECT. I'll repeat it for the last time, as apparently nobody has the answers: I'll likely buck up megabucks and run testing to see what works. But I'd prefer not to have to buy 6 throttle bodies and run tests on them all. I'd like to get a ballpark figure to maximize my tuning time on the dyno and help narrow the selection quite a bit. The day I make 750HP with a 60mm (or 70mm) throttle body, I will be the first guy to necropost this thread and post a 'NOT NEEDED TOTAL WASTE OF MONEY: IT'S A BLING BLING THING' criticism. Till that point, I'm ASKING. Nobody has an answer save for Wizard Black.

It's not like I haven't gotten enough of 'Japanese History Lessons' of american culture these last couple of weeks. You think I make this up, but...I'm not that inventive, really, I'm just a talented parrot! ERRRACCH!

"Motor Insanity sheets are required to do the necessary calculations."

I wouldn't know about the 'italian' thing... I'm full blooded American... I just use the screen name "Tony D" because 'Fat Walking Eagle' would sound presumptious. It would have nothing to to with nobody being able to pronounce my last name properly. I mean, Ciccolo, how hard can it be, right? "Burn the bat, eat the cannolis." The perfect crime: no evidence! LOL "What's that, someone claims a stock 140mph 240Z. Fredo, what did I tell you about exaggeration, here on the forum? Michael, get me my bat..." I hear Cubans got a good thing as well... LOL

Yes, you might have to eyebrow the smaller bore in the L24 block. A 260Z block had these 'eyebrows' in it already as they moved to larger valves in those heads. It all depends on your head and how it lines up, some won't hit, others do. Mine did, but didn't bend a valve and only put maybe a 0.020" nick in the block where the valve went by...and then only on three cylinders. A quick clearance with a die drinder with some grease to protect the top of the piston and rings from swarf falling in during the process, and you don't even need to pull the engine apart to do that!

I drove a Triple Carbbed Z exclusively as my daily driver for years without any issues. Frankly, EFI makes all the carbs feel kinda weak, especially on a cold drive off...

To introduce the air at sufficient volume to make a difference you need Horsepower. High Flow, Low Pressure still takes HP. I can show you 6000ICFM compressors with a 600hp driver, and in the same frame show you a 2200 cfm compressor with the same 600HP driver, and the same frame. If you are looking for self supercharged engines where the compression of offline cylinders in a multiple cylinder engine provides the compressed air source to a tank to be used for boosting pressure for spurts of acceleration, talk to Andy Flagg, he put his stuff into the public domain a couple of years ago due to lack of financial backing. The car does run, though... It's a Honda, with the three-valve head. (Want to guess what valve 3 cam is used for???) On the best compressors, they get about 5cfm per horsepower and that's about it. Define the pressure, and I can give you a ballpark what kind of horsepower you will need for what flow...it's what I do for work (well, not really, I fix the problems the guys who lie about what airflow you will get per horsepower.... I'm more in the "make it make what they said it would make when the sold it to us department". They didn't give us a sign, so we bought one that said 'Service Department' because it was half-off. Guy that sold it to us said it had a 'self adhesive backing' and we didn't need to buy anything else. When we got it, it wouldn't stick to the door, and without thinking, three of the engineers had put screws through it before I mentioned perhaps we should go back to the guy who sold it to us and get our money back. They replied we already had a sign at the office, and it would be such a waste to send it back, why just not make this sign work...I think they have been in the field too long...)

This is one of three commercially developed alternatives to SU's that I know of currently for sale. Accurate Injection is a member here, and worked with site members in developing the Datsun Specific Stuff. TWM makes SU throttle bodies, so you are on your own for linkages on that one. Patton Machine makes some slick adapters (guy in France running them and has posted here as well) that convert the existing SU's to Injected TB's by removing the dome and installing the adapter---it utilizes GM TBI injectors that operate at 14psi, so no 'EFI' Hose is required with that kit (technically). I have made my own SU conversion, and our idle was fine. For a Turbo, KISS and just use a single T/B...feeding two TB's on a plenum is more difficult than you would think in terms of equal airflow... Z-YA made a fueling setup from twin Stock T/B's on an SU manifold, and made good power on it as well. They work, it's all a matter of what you want to pay...