T4 Hot side size?!

[smhheidari]

What size of hot side are you guys running?

Im shooting for 500whp stock b34 block + b35 head.
Got E85 setup already done and ready to go.

Im running 44mm and RSI turbo manifold non split pulse.
3.5" straight exhaust.

[T_C_D]

.58 or .69

It's going to be very laggy with 7.4CR and the tubular manifold and B35 cam.

[smhheidari]

Whats the recommended CR for that power range and E85?

[T_C_D]

Whats the recommended CR for that power range and E85?

Probably 9.0CR. Use a b35 bottom end if avalable.

[smhheidari]

Which E32s have the b34 style mounting casting blocks?

I heard before 1/88, is this correct?
ETK doesnt show any difference between pre 88 and post 88.

[T_C_D]

Which E32s have the b34 style mounting casting blocks?

I heard before 1/88, is this correct?
ETK doesnt show any difference between pre 88 and post 88.

and all 88/89 e24 635csi.

[Cjames570]

I'm with TCD.... I would go up in compression for sure.... even if you just get back to 8:1 with a stock b34 head

To help answer your question though, I'm running a 6266 with a .81 hot side and getting full boost (20-21lb) at ~3300..... this is on a b34 with a b35 cam

[smhheidari]

how much CR i get with dirty b34 pistons/b35 head?

[M. Holtmeier]

Borg S300 .91 twin scroll. Currently at 17.5 psi with e85. Full boost by 4kish. Stock b34 with some headwork, valves and a PB cam. Still taking it easy with the tune, I'll have more concrete characteristics when I get on a dyno. So far the car doesn't feel too laggy.

[smhheidari]

Borg S3xx is my first option, but they dont come with anything less than .88.

I found this tho:
http://www.ebay.com/itm/322199073964?_t ... EBIDX%3AIT

@M. Holtmeier
How high your engine revs?

[M. Holtmeier]

Stock Redline.

I would switch to a twin scroll manifold.

[smhheidari]

Where can i get one for reasonable price?

[M. Holtmeier]

That's just it, twin scroll m30 turbo manifolds are pretty much all custom built to order.

[Bigdoug92]

Borg S300 .91 twin scroll. Currently at 17.5 psi with e85. Full boost by 4kish. Stock b34 with some headwork, valves and a PB cam. Still taking it easy with the tune, I'll have more concrete characteristics when I get on a dyno. So far the car doesn't feel too laggy.

Which S300 are you running? Getting a smoking good deal on a new one and can decide between the S362 and S366.

[M. Holtmeier]

S366.

[Bigdoug92]

.91 A/R divided or .88 A/R open?

[M. Holtmeier]

.91 divided.

[Bigdoug92]

when do you see boost start to come in? You said in a previous post is full by 4k.

also who's manifold are you running?