blrt

Ok, 450 ish whp should be able to achieve with a built engine/head with my current setup?

Matt M

Possibly. You might need a cutout or cat bypass- something to increase exhaust flow.

BLAZIN07SS

iTrader: (7)

450whp really that hard to hit on a pump gas lnf?

cmiller8006

iTrader: (3)

Well we hit 430 on 93 with my car, pte5857 and 24 psi. A couple more psi and it could be done, I have no cats, and a pretty straight through exhaust, we made 501 with the exhaust and 502 without it.

Matt M

It is with a recirc wastegate and a cat. That means all of the exhaust flow has to go through the cat. With a few psi back pressure pre-cat, the pre-turbo exhaust pressure has to increase quite a bit higher to drive the wheel. This hurts power quite a bit.

blrt

What about an even larger DP and cat combo? Something like a 4" DP and a larger diameter cat if there is such a cat? Would that work you think?
Or I suppose you can make a cat with flanges where I can bolt on for emission testing?


Sorry high jacking your thread AyrtonSenna.. Maybe we all can learned something new and explored new ideas through these discussions?

FasterIsBetter

How about 100 octane on an s252et catless wg recirc with the s1 cams and built bottom end? 450 would be easy on 100 with cams right? We have a sunoco station about 45-50 miles out that I could take the truck, a few 55 gal drums, and stock up there. Either that or go to the strip which is about 50 miles out as well and get 110 for $2 more a gallon.

Matt M

We have done a few modular cat setups that can be swapped in or out pretty easy for street/track use.

Maybe a 3.5" cat could be built in to the same downpipe.

I would think 450 should be pretty reasonable on that setup.

1Shotwonder

So the track downpipe with no cat and the wg to air allows for more power due to flow? If so that's good to know was going to choose recir. Wg due to noise but if it limits power ill deal with noise

RoadconeTuning

i wonder if you could find a tiny straight thru muffler to put on a dump tube... those things are ungodly loud

BLAZIN07SS

iTrader: (7)

so you want to restrict the only thing controlling your boost levels? lol

1Shotwonder

So everyone wanting to run the 2.1 doesnt want to do it unless they can get the efr why is that? Would it be a bad idea for a 2.1 and zzp's turbo upgrade kit? or if going to upgrade kit just better to run a 2.0 girdled block? What axles are handling that much hp?

Now let me know zzp just trying to figure things out lots of info being thrown around left and right but not as much facts on it. For instants if I wanted to say me 500hp would I be wrong to say I would plan on this build here:
pump gas 93
ZZP Girdle block reg. 2.0
ZZP Rods
Weisco Pistons
Stockhead/Cam
ZZP Springs/retainers
Upgraded clutch unsure which
Stock trans.
ZZP Stage 1Turbo Upgrade kit(includes piping,dp,turbo,etc)
Tune
possible meth

AyrtonSenna

Stock head/cam should be a big restriction if you want to make 500whp on 93 fuel. Also, you will need the meth for sure. My car was having trouble pumping fuel at 430whp. Level 2 axles will be ok.
Check out with Matt, but I'm sure he will confirm what I wrote.

I'm getting the same thing as you next year, just I'll get the 2.1 and the head/cam combo

1Shotwonder

whats the big deal with the 2.1? and who / where are the axles sold at ?

AyrtonSenna

Well, the deal is that you can run 88mm pistons instead of the 86mm. Then for the other detailed differences with the setup can be explained better by them. Definately the head/cam will be a good thing.
The axles are sold by driveshaftshop

1Shotwonder

Oh ok thanks for letting me know on the axles ... I wonder how big a diffrence it is from to 2.0 to the 2.1 and the stock head/cam vs the ported head/cam

AyrtonSenna

There are a few threads about it. Try to search for it. If not, you can email ZZp and they will contact you by phone.

AyrtonSenna

So, once I get my 2.1 girdled forged block with the head/cam combo, I'm thinking to replace my 55/57 with the 62/62. Does anyone know approx the spooling time of this turbo when combined with the 2.1 girdled forged block by zzp? The 62/62 will be installed on the midlenght manifold that came with the AutoWerks kit

cmiller8006

iTrader: (3)

I am going to say around 4500 rpms on that turbo. Like I have said my 5857 is spooled around 4000 and the 6262 is in a different league as far as power goes but spool will for sure be affected.