TimO

Joel, That's bad ass.....really like the added brightness.

Thanks SuperDan for all your hard work!!!

These are awesome. Next year for me.

Xnke, thanks for your input. I understand that power from a turbo motor is a function of flow. The same with an NA motor. Turbo PSI is air resistance, flow is volume of air. My engine has huge amounts of flow with a fully ported head, very aggressive cam, ITB's, custom exhaust header and a relatively high flowing GTX35r turbo. Flow is not really the root of my question. My question has more to do with combustion efficiency where a piston's dish matches the head's combustion chamber vs a piston where the dish does not match the head combustion chamber. More specifically how much does this combustion efficiency differential affect hp, torque and engine response? I'm checking other sources. Hopefully when I get a definitive answer relating specifically to Nissan L Series motors, I'll post it. Thanks again guys.

I've talked with both TimZ and JeffP. E-mails pending to a couple other guys. When I get a definitive answer I'll post it. Thanks Guys. Tim

Does anyone have experience regarding the importance of matching the piston dish to the kidney shaped combustion chamber of the P90 head? ...."importance" discussed below as hp, torque and engine response. Background; my question relates to an L series turbo non stroker currently making approximately 450-475+ rwhp. Fully ported P90, aggressive cam, ITB’s, GTX35r, custom turbo header, arp throughout, TEC3r engine management system, etc. Currently running 88.5 mm JE forged round dished pistons. For various reasons I will be freshening the engine this winter. I may be converting to a stroker if the killer deal on a LD28 crank comes through. If I build to a stroker, no question, I will run forged pistons matching the quench area of the P90 head. If the LD28 deal falls through, I’m asking myself, should I sell my current JE round dish forged pistons and replace them with forged pistons that have a dish matching the P90 closed chamber? I understand that by matching the piston dish with the kidney shape combustion chamber, the flame front doesn’t have to travel so far allowing optimal ignition advance due to the more efficient quench area. But I don't know to what degree performance is enhanced by this on an L series motor. So here’s the question - On an L series making 450+ rwhp on 91 octane California pump gas, all things being equal except for the round dish piston design, does anyone have experience/knowledge regarding increase in hp, torque, and engine response by going from a round dish piston design to a piston dish design matching the kidney shaped combustion chamber of the P90 head? Thanks guys.

Mohammad - I run a GTX35r on a L2.9. It has virtually no lag. At 2.5 pressure ratio it develops approximately 10% more lb/min than the GT35r. 10% is quite a bit when you consider the key to hp with a turbo is air flow (not psi). It packages well. No issues with enough space. It's considered a medium frame. As Tony said, it is not a big turbo. My 2.9 will soon become a stroker. My target hp is 600. The GTX is a great turbo for my application.

I'm the original owner of a 72 Z. Through marriages, divorces, two kids and their college, Porsches, Corvettes, a Cobra (yes a real one), BMW's, 427 Ford, various jobs and many of life's trials, tribulations and triumphs, the only car that has survived is my 72 Z. Best decision I ever made was to keep it. Now that I'm retired I start out almost every day with a short blast in the Z. My great escape and an incredible way to start my day. Long story short, don't let a lull in interest keep you away from your passion. It will eventually be rekindled. My Z keeps me young, I will probably always have it, and it will never be finished. Oh did I say sometimes a money pit....well worth it!!!!

Are you talking about the ignition lock cylinder or the ignition starter switch? Check NAPA auto parts on line. Cylinder Part Number: ECH KS6690, Switch Part Number: ECH KS6673. I've used both on my 240 with no issues. Good luck.

Great job getting this site back up. Thanks Dan.

If anyone in the Nevada City Ca area is looking to borrow a spindle pin puller I have one! Tim

Are those wheels 0 offset? Go here.. http://forums.hybridz.org/topic/57565-rota-rbrb-r-4x1143-17-z-offset-wheels/?hl=rota

I had a Porsche 944 turbo with sport seats. Very aggressive side bolsters. Best OEM seats I've ever experienced. I also had a Porsche 944S with these less aggressive seats. Great looking and very comfortable. The only issue I had is the side bolsters were not aggressive enough for my style of driving, (street, autocross and track). But for primarily street driving these seats are great!

Here's mine.

Frank, my prayers are with you and the rest of the Corrigan family. I have had nothing but the best service and advice from Ross. He will be greatly missed.

My Toresn doesn't click. I had mine set up tight meaning I had the ring gear shimmed to the closest tolerance Nissan recommended....just a thought. Of course the infamous Z rear clicking noise could come from just about anywhere in the rear suspension.

I've had a Gleason Torsen in my 240Z since 1988 and I LOVE IT! I purchased the last one from Jim Wolf who installed it in an R200 3.54. I'm running 500+ rwhp, mostly street, some autocross and some track time with absolutely no problems with the Torsen. Is it bullet proof???? All I can say is mine has seen over 20 years of abuse with no issues.

I have the same exact issue and questions. More pics would be much appreciated. Thanks

It's not the first time Tim has created a revolution. Way to go Tim..again!

Here's my 72Z. I'm the original owner. Purchased in May 1972. I'm constantly asked if I'll ever finish it.... absolutely not. It's a project!!!

I received my GTX35R today. Unfortunately I won't be able to see the results for about 6 weeks when I reinstall the engine (minor fixes and mods). I expect to see a substantial increase in performance over my GT35R. Slightly quicker spool and a substantial increase in flow in the 18-24 psi range. Since I'm a Garrett dealer, I can give great GTX35R prices to Z owners with or without the turbine HSG. PM me if interested. BTW way TimZ, Garrett does not sell GTX wheels separately. You'd have to buy the GTX turbo and use your existing turbine housing.

Thanks!

rucus01 Thanks for the info. Just trying to get an idea if I'd fit in the TRS (non wide)....I'm 6'2" 225. Are you close to this size? The seats look great. Thanks Tim

Rucus01 Do you think the TRS wide would fit in a 240Z? The wings look ok but I don't know about the base. I would be mounting them without sliders. I don't need adjustability other than to fit the seat as far back as I can (6'2"). Your thoughts?? Thanks...

Check out this site. Look at the bottom of the page "Accessories and Upgrades". http://www.upgrademotoring.com/seats_interior/corbeau_seats.htm Not sure if it's done at the factory or??