madkaw

Datfreak, on a 240z you will have to trim the rear quarter lip,or roll the lip, to get 235's. You will have plenty of room on the inside rear, but the front is tighter. I currently have 245/45/17 on mine with stock suspension. I had to trim almost all the lip away at the 10 thru 3 o'clock postion on the rear. The front perch had to be beaten in flat to resume the same clearance I had with the 235's. I will be suprised if it never rubs, but I did run the suspension thru its full travel. http://forums.hybridz.org/showthread.php?t=135971&highlight=hyper+black

thanks for posting that nice Z. I have been debating colors and silver is at the top of the list. What version of silver is that? Very nice work!

I thought I would update the thread . I finally bought tires and I put on some 245/45/17 general hp ultimaxs. I decided to push for the 245 since there was a bit more selection in this size. Plus I feel I got a great deal on these tires that have been rated pretty high. They have a nice aggressive tread and they are still a 4 season tire. They were rated as having somewhat of a soft sidewall, but that might actually negate some of the harshness of the performance suspension of my Z. As far as the fitment, you'll need to trim quite a bit of the fenderlip off around the 10-3 o'clock position in the rear. I was able to bottom out the suspension with clearance. Whether it will be enough will be seen. There is plenty of room on the spring perch on the rear, just the outside will be close. The fronts took a little more attention to the spring perch. I actually grinded down the radius of the bottom coil on the spring so I could flatten out the spring perch. It doesn't take much at all to gain a 1/4 inch and that's all you have in the end. I actually gained back everything I lost going from 235's to 245's Sorry, no overall pics yet since i just finished up fitting everything and haven't got the car off the jacks yet. Here's a couple shots though!!

I just went thru this weeks ago. Search Racer brown and you'll find out everything including a contact ##

Well you didn't waste any time make use of your new tools. Looks like an average job.

I thought i would share my experience of working on a old 911 this past month. I'm just a decent mechanic that takes on side jobs to support my habit, but lately it takes all my time from a habit(1971 240). But for a dad who is now paying a tuition at IU for his- not so little girl- I have to do some thing to support my hobby. Fortunetly I have had the oppurtunity to work on another member's Z and now this Porsche. I guess the suprise for me was the lack of aftermarket for the old Porsche. Not that I haven't found any parts, but the repair panels for the car were universal and sucked. I had to replace the front pan and tank support and the panels fit so badly had to rework them to fit well. I guess I thought the sheet metal would have been better then what was available for our cars, but no! I am not a bodyman , so this might be old news for you guys and now I can see why body shops shy away from this work. This Porsche owner has been on vacation while i've had his car and I think he will be suprised at his bill when he gets it. I was also suprised at the lack of info on the internet. I am so spoiled with this site and CZCC and Zcar for easy info that I can get quickly. I have not found that yet searching for the older porsche stuff. If anyone has experience with the older Porsches , drop me a line. As much as I like the Porsche, I wouldn't trade it for my Z. Infact, I can't wait to get the oil leaking thing out of my garage!!

I have surfed thru your threads so i might be missing something but I'd say your taking a big risk right now. That is not enough oil pressure at idle, especially at 1500rpm. Like Woldson said, it should be more like 60psi, especially on a cold engine. This could account for the hotter temperatures-especially with these motors. Buy a new oil pump and prime it correctly. Check this out http://www.classiczcars.com/forums/showthread.php?t=23392&highlight=cam+oil

Everytime I see a black Z I think more about doing mine black. Looks good!

here's a pic of my X pipe and it's location. I placed mine for convience and room. Of course my application is for the L6 ,and I had to use room to get the pipes located in order to make an X. No real science here, I used a MSA header with unequal length pipes so I made the longest run to the X pipe come from the shortest collector pipes. I tried finding a pre-fab X pipe , but most were 2.25 or 2.5 inch and my pipes were 2", so I made my own which worked out since this was completely custom. I am not saying that I know what I'm doing, just some input. There is a lot of talk about 2 pipes for inline 6's and wave pulses and such, I thought the X pipe was the best possible solution for good sound and flow. Hope it works!!!!

The was the one thing I wanted to alter about the Z look was the rear end. I have a hang up about being symetrical, and the one pipe wasn't doing it for me. What a PITA, but it will be worth it when it's done. I'm happy with it, but I need to get it together with some paint now!

I didn't see any reference to such rockers in the article. There were two different types that had different lash pad surfaces if that is what you are talking about. I have the complete set-up with rockers springs and everything so as long as I keep them together I should be alright.

JeffP, thanks for the input, I have changed my mind about keeping this cam. It would be ideal for a regrind , if and when. The article that Zcarnut put up here on this thread is fantastic. I wish I had this article when I degreed my cam. In fact, I think I will take this article and re degree my cam with a better understanding. First I will reread this article a couple more times to hope to digest a greater % of it. The article help explain the single valve spring and the colored spring retainers-a unigue aspect of Racer Brown. I feel like I found a real treasure since the cam looks like new. Now back to studying the article -I wish I was a real mechanic:grin:

Jon, As always, thanks for the response and advice. I am trying to decide whether to hold on to this cam or not and think it will be too small for any future projects. The duration numbers baffled me and I want to make sure I am not letting go of something special. I might need to go bigger on the duration if I find that my compression is a little high with head. I know your a big proponent of the larger cams for these motors. I might just hold on to the cam incase I have any problems with my Schneider kit.

Based on the numbers I found for this Racer Brown cam as far as lift and duration, how does this compare to my (already installed)Schneider Stage 2 cam with it's advertised 480 lift and 274/274? They seem very similiar but it seems that the duration values are attained differently which I don't fully understand. Also, do you think that this Racer Brown cam would be a good canidate for a more radical regrind later down the road? I have read that the original Datsun metallurgy is superior and folks have had good luck with those regrinds, but any opinions on the Racer Brown stuff?

I finally found some used tires to throw on my Rotas and I ran the suspension thru it's travel. The rear i took the spring out and ran the wheel all the way up against the bump stops. As you can see there is a full 1/2" on the inside with the spring perch ,and it will take just a little trimming on the outside to clear. I believe 245's will work with rolling of the fenders. I probably ran the the suspension further then the compressed spring length, but I am not sure. I measured atleast 5+ inches of travel. I will trim the fender lip and try again. The front is a different story. I wouldn't go wider without beating my spring perch in some. There only 1/4" at best. I did not pull the spring since i am pretty sure they will clear the outside easily. Any ???

I wish I could contribute to these threads with some real experience, but I can hope that I get my project going by the end of the year. I have tried something different and I hope beneficial in my twice pipe quest. I am hoping the crossover pipe will help in the scavenging. I am running twin 2" with the X pipe-hope it sounds good!!!

I just picked up these wheels and tires because I am going to use the tires on my car. I will be selling the wheels but I was trying to figure out if they were a stock Honda wheel or maybe aftermarket Enkei's . They do say Enkie and they are 17X7s . Any help would be appreciated.

Texas300, I was told by Kim, (I might have misunderstood him) that the 8.5 only came in a RBR, which is what I have. I believe you are looking at a mixed combo, though you can't see the rear set real well. Look up the thread I have on the Hyper Black RBR's , there are some pics. Either way, the wheels look great on the car!

one more pic without tire. It will be after the holiday before I try tires. There is a member that has 225's on these wheels and they fit WITHOUT flares. I'm going to push for 235's or 245's, but it looks tight everywhere with just the wheel. Armand, aren't those RBs on your car-what do they weigh. I know 20.5 is heavy, but then i went out and picked up the stock wheels and tire , then it didn't seem that bad. I think the stock set up was like 45lbs.

I thought I would post up these pics of my new wheels. If your like me you were probably wondering what the Royal hyper black really looks like since there isn't a good digital pic to be found. Well, I took the plunge and bought the 17X8.5 rbrs in that color , so here you go. I would decribe it as a cross between the silver and the gun metal. I like it because it is a little more color then just silver , but not quite the dark gun metal. Tell me what you think. Sorry, no tires or lugs, so no test fits yet. They do weigh in at 20.5lbs.

I called the number on the site and found out what the numbers mean: SS-55= denotes what cam grind This cam in particular was advertised duration and lift @.050 valve lift 220degrees @.025 valve lift 246 degrees with 1.5 rockers 480 lift It was said to be a street/slalom cam 575-147= May 1975, 147 cam made 575-147

I will do that Tony(check back). I will post up what they tell me. So you saying that this cam is old stock from Racer Brown. I have never read anything bad on the Z sites about Brown, infact it seems that this is desirable stuff. This cam might have to be saved for a future stroker:-D.

I can't see where my cam is on their charts, I guess I will have to give them a call.

I have aquired a racer brown cam and would like some help deciphering the # on the cam. Check out the pic, can it possibly be 575 lift:eek2: The springs are definetly stout enough.

ebay has some Exedy clutches for the Z31 turbo for a good price. i asked the seller for a cross reference to the 280zxt and i think I stumped him. Either that or he is working on re- advertising the clutch. If you search around the vendors you'll find a lot that group the 300zxt and the 280zxt together selling the clutch kits.