with these mods can I......

[Cleaner13]

ok since I am very low on money at this time couple hundred to spend thats about it

I cant upgrade to a bigger turbo, injectors, chip

what I am looking to do though is to max out the stock turbo
I want to be able to run the max psi with pump gas

I want to know if these air/exhaust mods will get me to that point where I can move enough air to use 94 octane

in right now is

THDP 3"
3" test with dump
hooker cat back
RJC power plate
Big Neck intercooler

what I plan to install

Jay Jackson plenum and throttle body
ported intake and matched to new heads
ported and polished heads that are CCed to a larger chamber of 30cc used with some kind of thicker gasket to drop some compression

currently I run 17.5 psi on pump with no knock

what you guys think?


thanks

Carl

 

[blackbuick87]

A THDP will not help you at all at this stage.

A big neck on the IC is a good idea.
The power place is a good idea also
Hooker catback, or another type of perf exhaust, is necessary also.

This should give you enough to come close to maxing the turbo and injectors. I assume you already have the necessary fuel pump and scan tool upgrades also. Dont ignore the chassis, it also needs mods to make you go fast

 

[blackbuick87]

Sorry I misread what you have and want. Who is porting the heads? a good port job costs as much as a new turbo almost.

I dont know about the thicker headgasket. More boost at the cost of compression will make no difference. And a thicker HG has a better chance of blowing. If your goal is to make more power with less boost leave the compression alone.

 

[V8KILLR@msn.com]

What about an intercooler upgrade? Forget about buying the Jay Jackson plenum and throttle body (that is if you have not gotten them yet) and get a front mount or bigger stock location (used if you need to save the money). All the plenum and throttle body will do is to help keep the front two cylinders from running lean. It will not give you that much power, if any.

Jason

 

[V8KILLR@msn.com]

I would even get the intercooler before I got the heads ported!!!!

Jason

 

[Cleaner13]

the heads are already ported

isnt a new front mount or stock replacement like 700+?

thank

Carl

 

[V8KILLR@msn.com]

Precision Turbo & Engine was selling, maybe still selling there front mount intercooler for $795. Even if you don’t have that much money, selling it for $795 means that people are not going to be able to sell their used ones for that much. Maybe look for some one selling the old model of PTEs. You can also take a look at the people that are using the Power Stroke intercoolers and making them fit into our cars. I’ve never done that, but people on this site say that it works pretty well and they are doing it for like $300 at most!!!

Jason

 

[BLACK6PACK]

Alky injection!!! $300 and you can run 21-22 psi all the time with race timing!! Bar none, the best bang for the buck mod you can do. Its very fun with the stock turbo too. Anything under 40mph and when you lay into the gas the car sets sideways!!

 

[tim87tr]

Boost and timing is what you need for that stock turbo. If you are talking street fast then you would need alky inj or propane inj. At the drag strip for a good ET, you would need race gas, race chip, and sticky tires. Hopefully you have posi. Both these setups should get you into the 12s.

 

[Cleaner13]

yes I finally got the posi in since I had the only GN without it
lol
I have scan master and nitto drag radials as well

I am lookin to go as fast as possible but with pump gas

thanks

Carl

 

[V8KILLR@msn.com]

Carl,
Since you do not want to go alky or race fuel, I still say the intercooler is the way to go. Upgrading the intercooler really wakes up our engines!!!!!

Jason

 

[Cleaner13]

any recommendations on what front mounts and what people get the best gains on?

will my car overheat or run hot after?

thanks

just wondering whats the max psi I can run on the stock turbo before its not efficient

cause I did use race gas and 94 mixed and I got it to about 21psi with very low knock <.8

thanks

Carl

 

[V8KILLR@msn.com]

Carl,
You will run hotter. I'm just about to put a front mount on my car. The way I was thinking about it is like this………...we are going into winter, so we are not going to over heating. By late winter or spring I'm going to put a duel fan and/or upgraded radiator.

From what I have read you should get between 0.30 – 0.50 sec gain from a front mount.

I’m going with Jack Cotton’s IC. The reason why I’m going with his is because his IC pushing the tanks the furthest out. This gives the best cooling because it allows the most air to past through to the radiator. If you look I posted a question about this 3 weeks or so ago. Comparing all the good ICs (Cotton, Precision, and CAS)…… they are all about the same in power gains. I would vote for Jacks for what I told you. However, I would call him first because his is very big and you may have too small of a turbo to support that IC.

www.cottonsperformance.com

Hope this help!!!
Jason

 

[V8KILLR@msn.com]

By the way, be careful asking which IC is the best and I guess asking which of any thing is that best. When I did put that post up I started WW3….hahaha. I even got too into it and got a little madder then I should have. Oh well…….

Jason

 

[Eric Stage I]

Since you say you are only spending a couple hundred, alcohol injection is the only thing that will allow you to raise the boost a significant amount on pump gas. The stock turbo doesn't do a whole lot past 21-22psi in most cases.

Eric

 

[jojo]

I dont believe this was mentioned, but im assuming you have a stock fuel pump and no hot wire. I had a stock fuel pump with a hotwire, and couldnt get passed 18 or 19 psi of boost, due to the pump not being effecient enough. I was losing nothing but power at the top end, really sucked to because you would feel the car bogging big time, and my 02s were all screwy. Once i put the Walboro 340 in with it already hotwired, that woke the car right up!!!!! it was basically begging for fuel at the top end which i couldnt supply it with the stocker fuel pump. Im now running about 23psi of boost on 100 octane with no knock and 02s at about 750-760 or so, with fuel pressure set about 45-46psi. The more fuel you can deliver the more boost you can run. But im not sure you want to run 100 ocatane or not. Im not sure if you would consider that pump gas or not. My guess is though from what ive experienced is 92 or 93 octane probably wont get you anymore than about 17 to 18 psi of boost depending on your tuning and of course your car

jojo

 

[BLACK6PACK]

With alcohol injection you are running pump gas. Its only when you put your foot to the floor that the alcohol starts pumping. If you want to stick with pump gas, then alky is the way to go. It takes all of about 1 hour to install and about 4 or 5 wide open throttle passes to get it tuned in. If you want to buy a front mount and pick up .2 seconds in the 1/4 for $1000 then do it, but alky will pick up close to a second in the 1/4 and only cost about $300.

 

[Cleaner13]

forgot to metion
I do have a walbro 340 in
and the adj fpr
and 2 hotwires

thanks for all your help guys

please keep it coming

Carl

 

[J Banning]

Go with the SMC Alky kit
http://www.smcenterprises.com


-Banning.

 

[NJTurbo]

Originally posted by BLACK6PACK
Alky injection!!! $300 and you can run 21-22 psi all the time with race timing!! Bar none, the best bang for the buck mod you can do. Its very fun with the stock turbo too. Anything under 40mph and when you lay into the gas the car sets sideways!!

Carl,

Stop spending money on hit or miss parts. If you only have a few bucks this is the way to go. There is no such thing as a few dollars to make these car really go. Everything from injectors, fuel pump, turbo, chip ETC has to be matched. To big injector, not enough turbo, to big turbo not enough chip or injector. NOS and call it a day if you only have a few bucks.