Aight man, well good luck. The 2.8 and smaller feels pretty good. The 2.7 and 2.6 are even better than a 2.8

I'll have to see how the TVS feels when I get it Tues and go from there. I have a feeling I'll be buying 80#'s and a pulley after awhile.

 

Anyone know what the 'safest' TVS pulley is on a 'stock' longblock. Still running stock springs, head bolts, head gasket, etc, and I'd like to pulley down without popping it.

 

I am runing the TVS with a 2.8 pulley, 80s and E85 and my Injector duty cycle is right at 95% so with gas you could easly run a 2.6 with the 80s.

 

Great to know thanks. I am mainly concerned with boost and cylinder pressure on the stock engine however, but I presume that is too highly variable to really know a 'safe' limit

 

whats ur afr at?

 

A lot of it really has to do with KR. What people fail to realize on pump gas is that conditions change daily. Temps change, cyl temps change, etc. Just because one day you don't have any KR, doesn't mean the next you won't. When you start to run high high boost applications this really starts to come into effect. You could probably get away with running a 2.6 tvs with lower amounts of timing. If you planned on doing this though I would highly recommend e85. I have personally ran a 2.7 tvs and e85 and the car was absolutely amazing. My injectors, 80lbers, were maxed at 6grand though. I plan on running 98lb injectors shortly and a 2.6 pulley on the tvs to put down some great hp/tq numbers. The difference between pulley drops and gas to e85 is absolutely amazing =D.

 

My 95% idc was when I was running 11.5 air fuel or 7.5 e85 air fuel.

Now I am running 11.7 air fuel or 7.7 e85 air fuel.

 

yikes, so what did ur idc% drop to @ 11.7(7.7)?

 

its right at like 93% not alot of a drop but still safe to run.

 

haha, im still on the 3.15 and 91octane @ 11.8afr and only at like 80%

 

Yeah I was at like 70 on gas with stock pulley and 60s. Somthing like that. We should add to this thread the pulley size and IDC people see with that pulley on gas and e85.

 

yeah, might be a good idea

 

There are a lot of factors to that tho. My fuel pump rewire lowers it a little. AFR changes IDC, then you have methanol and fuel type.

 

exactly...just like boost from one car to another will be diff



since ls4 TB is out of the question, would a ported stocker help?

so which fitting to i weld on the PCV? -10an or -12an?

oh and anybody think itd be worth it to mount like 1-2 of these http://www.jegs.com/i/Derale/259/16307/10002/-1 to this http://zzperformance.com/cobalt_ion/...=895&catid=178 to help keep iat2's down/more constant wether at idle, cruising, or wot?

 

Did you buy a fuel pump rewire or did you make one? I'd like to try and make one since a relay and a few wires doesn't seem worth $35. I'm not sure if I actually need one, but I guess it couldn't hurt...

 

-10an for the pcv

Onlt cost of shipping, $5. I tested for OTTP and took the pics for install directions

 

^ Good deal. I put together a pump rewire tonight and hopefully I can install it this weekend. Might help at high RPMs to keep a steady flow to the rail. What size fuse are you running on the inline fuse? 20? 25? 30?

 

Let me know how that works. I am out of fuel in my car 4th gear at 6300 rpm.

 

$35 is too much for a harness?

 

I'll be intstalling it with my 80's this weekend probably. You are also running E85 on a smaller pulley however so it's not a very good comparison. If I get a change to install the rewire first and log with my 60's I will, but if not I won't have a basis for comparison with the 80's.

I didn't say it was 'too much', I said it was 'not worth it', I should have worded it as 'not worth it to me'. I had the parts essentially laying around and the know how to make it, so free > any money. That wasn't a rude comment towards OTTP (especially since other vendors sell the harness for the same amount, and I've been super happy with the stuff I've bought from you). You're also basically the only vendor who ever answers questions. Sean is impeccable with answering PM's, and I believe I've talked to you on the phone before. So don't act like I've insulted you, it's all good. =)

 

I'm not insulted. New price is $29.99 http://www.ottperformance.com/store/...-Kit-9p918.htm

zzp used to sell their kit for $50 before we made one. FYI

 

OK Good, because OTTP rocks!

Those 'other guys' have always given me a problem, and I've bought tons of stuff from them. They hassled me like crazy after a $10 Interceptor 'SS' face I bought got lost in the mail, and it took then a couple of months to send me a new one.

 

Thanks!
good price!

 

Soo.. How 'safe' is it to run a 2.8" on a TVS on an other wise stock engine? All cooling mods except meth, don't want to run meth... OK with a conservative tune, or is that insta piston & head gasket death? Think I'll be OK so long as I keep an eye on IAT2's and KR?

 

Its perfectly fine on a very conservative tune...

But your car wont make any power because you will only be able to run 15-16 degrees of timing. If you try to run more timing your car will knock like Jehovah's Witness.