deeloc1

iTrader: (20)

So, i have been following KILLER-LS1's build where he just purchased a 88/94mm turbo from Comp and seems to be having problems with his turbine not flowing enough for his compressor. I've decided that i'm taking my oil-less 80/79 turbo back to them before i even go down the road with extreme backpressure. With that being said, i am gonna have a custom 80mm turbo built by them with a larger turbine...don't know if i want to go t4 or t6 or what size turbine to go with. Killer-ls1's 88mm compressor flows so well that it's out flowing his 94mm turbine so i know for sure that my little 79mm turbine ain't gonna cut it with the billet 80mm compressor. Either way i'm gonna stick with them, so can some of the experienced turbo guys give opinions on what turbine size you would use with the 80mm compressor and what housing...t4 or t6?

Combo is 364ci lq9, tfs 235's, VaSpeed vtc3 cam th400 with 8.5 GN rear. Goals are 900-1000rwhp

What do you guys think?
Thanks,
Dee

KILLER-LS1

iTrader: (18)

I would go with the 94mm

deeloc1

iTrader: (20)

That's what i'm thinking...would you go t4 or t6? What ar?

Cam72aro

iTrader: (28)

It is the theory, but no one is for sure thats the problem. I would go really big because of the theory that these turbos flow so well. I am not sold on them yet. There was a lot of hype about them, but they have yet to prove themselves. If you can send it back to them and get your money back. Get a turbonetics or another brand that is proven. Just my 2 cents.

deeloc1

iTrader: (20)

I hear ya...i'll see how it goes with thos next turbo. If it doesn't work i'll go elsewhere.

Cam72aro

iTrader: (28)

I hope it works for you. I hate seeing y'all spend so much money on a turbo and it perform the same as a unit thats half the price.

Sales@Tick

iTrader: (3)

Get a S480 with a T6 96mm wheel with a 1.32 housing and the right cam.

Tally TransAm

iTrader: (17)

i would go with something other than a comp

rotary1307cc

iTrader: (5)

i say it is your money and not mine so lets find out how the 80 billet does on the 94, haha
doooooit, i am curious

spoolin turbo

This advice is so true, get the right cam for the car and that will make the difference. No matter what turbo, the wrong cam and it wont work properly.

deeloc1

iTrader: (20)

I'm gonna do the 94mm turbine should i go t6 1.32ar or the biggest t4 i can find? I think they have a t4 around 1.50ar that isn't listed.
I have the virginia speed vtc-3 turbo cam. On there website they said it's specifically made for a stock cube 6.0 with a 80mm turbo...here's the link. It's a reverse split cam.

Specs are supposedly 23x-23x .61x-.60x, here's the description from the website... "This is great cam for a 370-383 cid engine with an 80mm turbo,also work well in mild 402-1000+rwhp is no problem for this cam.has a good idle."

http://shop.virginiaspeed.com/product.sc?productId=144

Sales@Tick

iTrader: (3)

Do you have to have a Comp turbo?

I don't have anything against them I just like to use what I know personally works and I know several cars, again...personally that use the BW stuff and just flat haul the mail and have never had an issue.

I would really want a bigger turbine on a motor the size of yours with a cam that big, you can't have an evo as early as that cam will have with an undersized turbine wheel. It's like trying to get in the front door of a jam packed house party with no room to move around inside. Your trying to get in the front door, but because no one is moving inside and there is no where for them to move to you can't get in the door.

Same philosophy and theory with an early evo and a turbine wheel that is too small. Corny metaphor, but it's the best way I can describe it so everyone will understand.

spoolin turbo

Even if he went with a borg he would still be using the 96mm turbine so I would expect the comp to work the same unless you think he should go bigger.

Good metaphor to get the point across. Amazing how many people mismatch cams and you seem to point that out a lot.

deeloc1

iTrader: (20)

[QUOTE=Martin@Tick;16612285]Do you have to have a Comp turbo?

I don't have anything against them I just like to use what I know personally works and I know several cars, again...personally that use the BW stuff and just flat haul the mail and have never had an issue.

I would really want a bigger turbine on a motor the size of yours with a cam that big, you can't have an evo as early as that cam will have with an undersized turbine wheel. It's like trying to get in the front door of a jam packed house party with no room to move around inside. Your trying to get in the front door, but because no one is moving inside and there is no where for them to move to you can't get in the door.

Same philosophy and theory with an early evo and a turbine wheel that is too small. Corny metaphor, but it's the best way I can describe it so everyone will understand.[/
Right now i do have the comp 8079, i'm sending it back and i'm gonna go 8094. Are you saying the 94mm turbine is still too small??? I noticed the s480 has a 96mm turbine. My problem is that i've had this turbo for 5 months now and they may be unwilling to refund. They are willing to make the specs right though.

Thanks,
Dee

SPRAYED 01

iTrader: (22)

Is the 80/94 a ct43 t4 or is a large t6 turbo?

spoolin turbo

The 80/94 would be a midframe turbo in the CT5X series. It can be T4 or T6 from the post above.

Also you guys have to remember a T6 0.90a/r is larger than a T4 0.90a/r for example. Also you have T4 small frame and T4 midframe. If you have bolts on your exhaust housing you have a small frame. Fully v-bands are mid/large frame.

deeloc1

iTrader: (20)

I know actual housing size varies from t4 to t6 etc...that's why i asked t6 1.39ar or should i go t4 1.50ar? I'm thinking i'll go 1.39ar t6 so i can get as close as possible to the proven s480 turbo. Here's how my comp would compare to the s480...s480 has 80mm compressor and 96mm turbine with t6 1.32ar. My Comp would have Billet 80mm compressor and 94mm turbine with t6 1.39ar. Does this seem like a good turbo considering my cams valve events?

Sales@Tick

iTrader: (3)

[QUOTE=deeloc1;16612317]If it's the same design as the 94mm wheel on killerls1's you may want to rethink it. Hell try it and see what happens first.

You've already spent the money on it and use the 1.39 T6 housing. If it doesn't do what you want then you can re-do it. Is that the biggest wheel they have for that frame?

deeloc1

iTrader: (20)

Alright, so knowing that comp can get the gt50 or gt55 wheels what size compressor would you use on my combo? I wanted to go with a 80mm originally because i've heard that, that size turbo is hard to beat on a 370. But, now i'm starting to think I should go bigger since the spool will be a lot better Than the cast borg warner since the comp has a billet Compressor and ball bearings (lighter wheel should allow me to go bigger, yet have the same spool as a cast 80mm). Should i go with a 88mm with the gt50 wheel and a 1.08 ar t6? Or go 88mm Billet ball-bearing compressor with the gt55 wheel at 102ind 112exd and a small .90 ar t6 housing? What do you guys think? At this point i can pretty much get what ever size i want for my 364 lq9. Let me know what you'd go with and why.

Combo is 364ci lq9, tfs 235's, Fast lsxRT (Truck intake), VaSpeed vtc3 cam, Morel link-bar lifters etc... th400. Goals are 1000rwhp. Only thing stock in the shortblock is the crank...has Oliver rods, dowelled main caps and coated everything...main, cam, and rod bearings...etc.

Thanks,
Dee

spoolin turbo

Your motor is smaller than killer-ls1's. Keep that in mind. Unless you dont mind the lag then grab the same thing.