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Registered:
May 2002
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intercooled turbo BLOW through carby?
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Wed, 29 May 2002 18:52
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hi guys,
I was told by USA guy with 22R friend that if I went Weber and swapped shaft seals I could do my desired intercooled turbo blow through carby (instead of non-intercooled turbo draw through regular carby)
I want to use the stock carby, does anyone know how I can modify it to achieve 6psi on the 22R?
If not possible, has anyone in here in Australia upgraded to 32/36 Weber, and can I do it with that setup?
thanks,
Tom.
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: intercooled turbo BLOW through carby?
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Wed, 29 May 2002 22:09
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Tom,
This is not my field of expertise by any stretch of the imagination but your biggest challenge will be getting a carby that can hold the boost pressure. I am led to beleive the old style SU carb's are a good choice for this.
Hope that helps,
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Registered:
May 2002
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Location:
Brisbane
Registered:
May 2002
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Re: intercooled turbo BLOW through carby?
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Thu, 30 May 2002 07:48
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The carbeurettor is a known restriction on 22R's; I'd ditch it pronto if I wanted to get any sort of performance out of a 22R.
And if it was me, I'd be replacing the carb with factory EFI! 22R-E fuel injection is not expensive or hard to come by, and it's a bolt-on affair for your engine. Straight away you eliminate all the hassles you're going to run into with a blow-through setup.
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Location:
Sydney
Registered:
May 2002
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 Re: intercooled turbo BLOW through carby?
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Thu, 30 May 2002 08:27
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Turbo guru Hugh McGinnis in his book "Turbochargers" recommends not going blow-thru carby, it looks simpler initially,but you run into too many problems,even apart from the safety issues, creates fuelling probs, even down to collapsing the float!
Draw-thru the carby is actually a lot simpler to do, the carby just thinks its on a much bigger engine! 
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Registered:
May 2002
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Re: intercooled turbo BLOW through carby?
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Thu, 30 May 2002 09:17
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If you want to blow through a carby the best ones to do it with that can handle boost are the ones off XE and XF falcons they are a webber ADM they fit on the same adaptor plates as the 32/36 webber. I have seen these used on a few cars and they work really well.
Good luck from Garreth
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Location:
Gold Coast
Registered:
May 2002
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Re: intercooled turbo BLOW through carby?
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Thu, 30 May 2002 13:05
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The Sigma Turbo and the KB Laser Turbo both ran a Solex "pressurised" carby with their factory blow through setups.
In my experience, with a good EFI fuel pump, these are suitable for up to about 20 psi. Hard to believe? I ran 23psi with factory internals in my Laser. It was thrashed every day for 18 months before the 10 year old motor died (of detonation).
BUT fuel pump choice is critical... with the wrong pump and high boost, the motor will drain the carby bowl dry... 
It is certainly not the right way to do it though. It can be difficult to get the mixtures right throughout the rev range.
One of these carby's might be fairly hard to find nowadays too...
Go the EFI... It's much smarter.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: intercooled turbo BLOW through carby?
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Thu, 30 May 2002 13:10
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How hard would it be to inject a 21R-C with 22RE stuff?
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Registered:
May 2002
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 Re: intercooled turbo BLOW through carby?
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Fri, 31 May 2002 04:50
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No Message Body
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Registered:
May 2002
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Re: intercooled turbo BLOW through carby?
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Fri, 31 May 2002 13:17
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Hey, Yahoo groups (groups.yahoo.com) have blow-through and suck-through turbo email lists. they would know everything you need to know.
just search for them on in yahoo groups.
tim
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Location:
Brisbane
Registered:
May 2002
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Re: intercooled turbo BLOW through carby?
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Sat, 01 June 2002 05:01
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| justcallmefrank wrote on Thu, 30 May 2002 11:10 PM |
How hard would it be to inject a 21R-C with 22RE stuff?
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That would be (a) very hard and (b) a total waste of time. 
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: intercooled turbo BLOW through carby?
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Sat, 01 June 2002 12:35
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Fair enough...its been offered to me before, I wasn't stupid enough to take it up, just curiosity got the better of me
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