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Mudge

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Posts posted by Mudge

    Best way till TDC

    in 6 Cylinder Z Forums

    Posted

    Hmm, its damn big thats for sure, it may be 1 1/8" (I have mostly American stuff), I can try tonight on my F54 but its a turbo car, I am guessing they will be the same though.

     

    That would be 28.575mm (28/29 who knows).

    Does anyone here provide 2JZ's?

    in 6 Cylinder Z Forums

    Posted

    still, no V8 is going to be as cool as a Full-Boosted all out supra Z. i mean, you still have some fuel efficiency at 600 hp or so, and great handling

     

    Thats in the eye of the beholder, to me nothing is more badass than an NA V8 with a McNasty cam, however an NA setup is not going to get the gas mileage of a turbo car, correct. Under race situations though, EFI is EFI IMO, and with turbo cars running richer under boost than an NA setup car, I'm not really convinced the turbo car is going to get better gas mileage under racing situations. However, unless this car is going to be on a long distance course, no refuel will be required anyway. Since gas weighs something like 6.7 pounds per gallon, to me its not a huge concern, although again seriously tight race competition stuff is going to be very carefull with any kind of weight, however I am not guessing this is a 1000 HP spec series racer, because that was over in the 80s!

    VG30 ign module on 82ZXT?

    in Ignition and Electrical

    Posted

    Any thoughts on the diz issue and just going HEI? Alternative is getting a mag-trigger diz and MSD style setup with boost retard, or again unhooking the advance, I'm so used to full maps though that I'm old-car-stoopid.

     

    I've got some parts coming for the upcoming Megajolt Jr (Ford EDIS), but that may be awhile off.

    93 LT1 computer tuning.....

    in Gen I & II Chevy V8 Tech Board

    Posted

    Yep, sometimes its easier to start from scratch - and you learn fast this way I think because you have to go through each table every time (although you can import with Tunercat).

     

    I have a stock 95 M6 file around, and for a 94 also I *think*, not much was changed but off idle injector stuff and maybe a couple MAP cells, anything else would be hidden code stuff, as best I can recall.

    Has anyone written a Chevy Vs. Ford Paper?

    in Non Tech Board

    Posted

    Thats a toughie, there are alot of plusses to the GM LS1 IMO, but the GT is not all that bad either, it may be slower but they have an 8.8" rear, and the cars are IMO a little more driveable for the average sissy. I had a 97 Cobra vert and it was awesome to drive, as far as comfort goes.

     

    However for handling (for a big car), and not looking like a 4x4 - and going "fast" I prefer the GM stuff. Alot of the Stang parts are cheaper though, some of them by a large margin.

     

    I would say its easier to work on a modern Camaro vs Stang, that Cobra engine compartment SUCKED - I guess I haven't seen enough GTs to know whats under the hood, but I am not guessing the OHC stuff is pretty. Dont know how many points your going to cover, but OHC is one which has its drawbacks as well as those plusses too, easier to get different length pushrods for OHV when heads are shaved though.

    pricing for stand alone engine management

    in Fuel Delivery

    Posted

    Working directly in assembler produces the most efficient and fastest-executing code possible. The result is that MegaSquirt can provide real-time fuel calculations up to 16,000 RPM!

     

    I'm sold on the system myself, for the price its worth the "gamble" IMO. Seeing how I dont have the salary to support a $30,000 240Z project, I want to keep costs down - and frankly I'd go to a V8 if I was limited to only $1000+ ECU setups for the turbo car. YMMV

    93 LT1 computer tuning.....

    in Gen I & II Chevy V8 Tech Board

    Posted

    Mark, I used to be on the Tunercat mailing list - but its slow, and so many various cars on there, that there is not alot of LT1 specific help. I was on the LT1 Edit list for awhile, the terms are sometimes different but once you understand the whole setup, its a good list to be on. http://www.lt1edit.com

     

    If you have any questions though I could try to help, shoot me an email.

     

    With Tunercat you need the base software package $69 I believe, and the $20 $EE definition file, if your cylinder size is not 717 then you need to use $EEb which should be included with $EE, I believe this effects early 1994s but dont recall for certain.

    VG30 ign module on 82ZXT?

    in Ignition and Electrical

    Posted

    Yep, someone was nice enough to send me an Excel spreadsheet of the differences in pinouts for the 300ZXT.

     

    The signal that I see with my DVM when turning the diz by hand, at pin #5 ground is a standard 12v or so (other lead on + obviously), and when rotating the diz it periodically drops down to about 4.5v, since my DVM can only sample a couple frames a second my resolution is pretty poor. I tried turning the diz at various speeds, as slow as only firing the injectors (click click) every 2 seconds or so.

     

    So, while I wouldn't be supprised if a working ignition module didn't fix my problems, I see nothing else that I can point at to see that the car would not have ignition. I see zero ignition inhibitors (key goes straight to the transistor), and my other known inhibitor is grounded, which I can only see affecting fuel anyway - and my pump is wired seperately. My ECU "boot" voltage even is correct, only at START and not RUN.

     

    What I was planning without the coil is getting an older diz and running my HEI setup and/or an MSD, if I can figure how to disable the advance of course on the earlier diz while still making it run decently down low. For the vacuum stuff I imagine this is pretty easy, but I dont know what the timing map is supposed to look like for the turbo car, I only know the generic pull 2º for each 1psi rule.

    93 LT1 computer tuning.....

    in Gen I & II Chevy V8 Tech Board

    Posted

    You dont reprogram a PROM, only EEPROM.

     

    Couple notes about this high RPM limit, ALDL wont ever see more than 6475 RPM, 6475/8= 259, so I assume we have probably 253-254 data points, remember this is an 8 bit computer and logging RPM is in increments of 25 RPM.

     

    Stock tachs are notoriously crappy, 800 RPM looks like 950-1050 and so on, each car is different in how incorrect it looks.

     

    Depending who you talk to, you will hear different RPM limits. I remember for awhile that the rumor spread that the Vette computer was supposed to have a little more headroom, I dont know if thats true, I wouldn't be supprised if it wouldn't - who knows. Lastly I already mentioned that past 100 MAP, past 7k RPM, and past values the computer doesn't expect to see the last known value will be used. Just like on the old L98 PCM that supposedly had no fuel maps above 3400 RPM, it would use the old values (I never owned an L98 so I dont know for sure thier story).

    VG30 ign module on 82ZXT?

    in Ignition and Electrical

    Posted

    Sleeper I'm lost here, transistor trigger? The trigger as I know it comes right off the ECU??? Positive to key on power, and the negative transistor wire goes to the ECU YW pin 5.

     

    Since timing and fuel are related to the distributor, is that what you mean? I see it looks very different, although it may well have changed two times or so during the 300ZX reign.

    Does anyone here provide 2JZ's?

    in 6 Cylinder Z Forums

    Posted

    Mudge' date='

    Would you have a link to a possbile website of this Camaro you speak of please?[/quote']

     

    The 1680 HP car is a GN, the Camaro is found at http://para.noid.org/~lj , he sells low imp converter boxes for those on stock computers, as he is also.

     

    I garuntee you' date=' you dont see 987 HP road racing V8s either[/quote']

     

    Now thats a point for TT350, not me :)

     

    So, dont pretend that these 1000HP V8s you speak of are Honda Civics of reliability and legth of life. ;)

     

    I hope you weren't thinking I was! As I have stated previously many times, there is no such need for such assinine HP on a street car based road racer. However you still have a better chance with cubes, although I would also look at # of mains and style of cap, but pistons/rods seem to be the weak part of the link IMO.

    Does anyone here provide 2JZ's?

    in 6 Cylinder Z Forums

    Posted

    For a 3 liter engine the Supra stuff is "great," but lets be realistic about long term driving. I can't say I know of any 987 RWHP Supra guys who are road racing thier cars, and they aren't on stock internals at that point either, should we even begin to mention how obnoxiously peaky they are? Power for 1500 VISCIOUS RPM, kicks the rear hard, forget trying to drive that thing on a course.

     

    Give me a naturally aspirated 700+ HP 434 and I still wouldn't have have the balls to go WOT for very long, not to mention that is going to be a traction nightmare. Mopar race engine builder makes over 700 crank on his 434 in a 4th gen Camaro - on pump gas with a streetable idle.

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