intercooler swap 4 less lag?

[T- Type Tim]

I'm thinking of getting a smaller frontmount for my combo. The current setup seems to have some lag and decent top end. I'm going to stick with a 60 series turbo for a long time . I'm looking at one of Marks front mounts (smaller one) instead of the powerstroke i have now. Any thoughts on doing the swap?

 

[GNVYUS 1]

Intercoolers are much more complex than just core size.

You're looking for a core that has a very low pressure drop, 2.5" piping and the rest is based off of what CFM is practical for your GN. You probably don't need a 24x16x3" core but just going off of the size means jack. Tons of ebay intercoolers get slammed by smaller more efficient ones and vice versa on sizes etc.

I'd bet a PTE stock location is plenty.

 

[street6]

i run a te60 and use a fmic w/ 2.5" piping (seems to work good). it's an older gn1 performance unit. not sure of the core size but it's not tremendously large. i always figued that if i were going to stick with a 60mm turbo then the 2.5" piping would have less lag. i would have went with the 3" piping if i were running a larger turbo (but it still has to hava an efficient core).

 

[turbocam]

I had a te60 with an rjc fm.There was 0 lag.I would go with a little more stall.It would probably be cheaper to get a restall than a new ic .If your convertor and tune are right,there will be no lag.

 

[T- Type Tim]

i'm still in the process of tuning it.... pulling fuel in 1st. Anyway, im' less happy with the fitment of the powerstroke than the performance at this point , but i 'll give it a little more time and see what it'll do.

 

[Crawlin83]

Are you selling the powerstroke one and if so how much??

 

[ijames]

The smaller the turbo the bigger the effect of ic volume should be, since a smaller turbo moves less air and will take longer to pressurize the system (yeah, that ignores spoolup but work with me ). Way back when I ran a TE34 turbo (between stock and a TA49 so lots smaller than your 60 series) and went from a stock big-neck ic to a CAS V2 fm with 2.5" pipes and really couldn't tell any difference in lag. Going from the 34 to a PTE54 was definitely noticeable , both in lag and after the boost came up. I doubt you will be able to tell the difference between different front mounts.

 

[T- Type Tim]

I see what your saying , as far as a performance stand point. I'm going to sell this unit though simply because of the fitment.... im going to use the GN1 front mount, which is smaller but should more than handle my HP needs.

 

[bison]

What ex housing do you have? Id expect lightning fast spool with the 3000 stall and a 61BB. Ive used an old AC with a 62 journal and it spooled as fast as i could floor it.

 

[T- Type Tim]

i thought the same thing... i'm using a .63 turbine housing

 

[bison]

i thought the same thing... i'm using a .63 turbine housing

Is it possible you have an exhaust leak pre wastegate?

 

[T- Type Tim]

That was my inital first thought too. I checked the crossover, the passenger header has a new 1400 on it , copper gasket on turbine / header flange, re torqued all after a few heat cycles. It really feels like theres a restriction somewhere when driving.... its not a dog off the line , but not as quick as it should be, top end its starts to come alive,,,, then when getting off the throttle it wants to monentarily die, almost like an intercooler hose blew off.

 

[84BuickGNYorkPA]

I can't help but wonder what condition your muffler/cat is in, have you tried unhooking the exhaust before the converter or running a cut out pipe to eliminate any back pressure possibilitys.
My second thought is, how is the seal on the wastegate hole?

Chuck

 

[bison]

My second thought is, how is the seal on the wastegate hole?

Chuck

Yes. This would be a big problem if it wasnt sealing

 

[T- Type Tim]

Just running the downpipe, no cat or muffler. I'm using a delta date mounted on the turbine housing , fresh gaskets no leaks there, wastegate hole is blocked off by the downpipe flange. The intercooler setup has a couple really restrictive 90 degree bends with silicone couplers, it looks like there is a slight kink to them. Thats where i'm guessing the problem might be?

 

[T- Type Tim]

ordered a GN1 front mount today

 

[84BuickGNYorkPA]

Give us a update when the time comes.
I forgot to mention that Banning(you can find him in the MAGNA section on the other board) runs a powerstroke intercooler and has been in the 10's with it.

Chuck

 

[T- Type Tim]

Will do. The powerstroke i have requires 2, 3" 90 degree silicone couplers because of modified end tanks, routing these through the front support is a bit different than using an un modified PS. This is where im concerned about the flow restriction, not so much with the core itself.

 

[Quick6'n'-K.C.]

Will do. The powerstroke i have requires 2, 3" 90 degree silicone couplers because of modified end tanks, routing these through the front support is a bit different than using an un modified PS. This is where im concerned about the flow restriction, not so much with the core itself.

2 - 3" 90° bends on a core that was built for a 447 cubic inch diesel, and you think there is a restriction?

I would assume no, but i havent seen it.

I had a sbc and the motor was built with the camshaft 1 tooth off, what a turd down low, but came alive on the top end.

Was your cam degreed when it was installed?

Is it possible the delta gate is hanging open enough to keep the turbo from spooling like it should.
I know the old ATR gates would hang open and once fixed, it made a huge difference when it was working properly.

HTH

BW

 

[T- Type Tim]

Motor was done by Nick Micales guys so i would think the cam was degreed, Never thought of the gate hanging up...