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Big turbo for 8v

Master D

New member
Joined
Dec 29, 2010
Hi everyone, I have the choice between a Holset H1C single scroll t3 Bullseye .70 A/R (external wg) or a Holset WH1C twin scroll (internal wg) with a 12cm exhaust housing..(I can change the housing for a external wg setup).. 2 turbos at the same price... So, I have a b230 8v running 6800rpm .. and my engine is ready for 25psi+ on methanol. I hesitate between these turbos..:grrr:


I would like to have your opinion! :-D
 
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Twinscroll cause it's cooler and more advancing?

If he is actually going to use a twinscroll manifold it will help with both transient response and spool time(300-400rpm) If he isn't using a twinscroll manifold then its for nothing.

Edit: Looking at his Avatar I'm going to guess that he isn't using a true twinscroll manifold.
 
If he is actually going to use a twinscroll manifold it will help with both transient response and spool time(300-400rpm) If he isn't using a twinscroll manifold then its for nothing.

Edit: Looking at his Avatar I'm going to guess that he isn't using a true twinscroll manifold.

Actually, I have a single scroll manifold and Garrett with Cosworth .48hot/.60cold at 20-22psi. But I want a bigger turbo.. and I have a deals on these turbos.
 
Actually, I have a single scroll manifold and Garrett with Cosworth .48hot/.60cold at 20-22psi. But I want a bigger turbo.. and I have a deals on these turbos.

I want that t3/t4 back! Best turbo I've ever had on my car for a DD duty.

What happened to the he351 you were offered? Personally I would go external gate, none of these turbo will have a wastegate can close to what you would want for a base boost.
 
I want that t3/t4 back! Best turbo I've ever had on my car for a DD duty.

What happened to the he351 you were offered? Personally I would go external gate, none of these turbo will have a wastegate can close to what you would want for a base boost.

My he351 is sold :grrr: , yeah my t3/t4 is amazing, but if that turbo support 25+psi on Meth and make good HP, I make a rebuilt & reinstall it! ... With external wg !
 
Too bad the he351 is sold. Highest psi run at the drag strip was a steady 28psi on the internal gate. Any more and one of my hodge-podge charge hoses would blow off.
 
That's the H1c with Bulleyes housing for 325bucks. (company price is $300 bucks for this aftermarket housing)

t3-2.jpg

t3-1.jpg

3''vband
t3-3.jpg

$_20.JPG


I read on cummins and Dsm forum ..and this Bulleyes T3 single scroll .70ar housing is a must have for the HX35. Increase spool up by 300-400 rpm compared to the OEM housing and still be able to flow over 50lb/min.
 
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