Draw thru using a CB Hideaway header?

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Blownbug
Posts: 26
Joined: Thu Feb 14, 2019 11:09 am

Draw thru using a CB Hideaway header?

Post by Blownbug »

Ok guys,
I am now starting my build using a CB hideaway header. I am looking for opinions as to if or not this header is going to work on my Draw Thru plans.
Is a full body with lid 67 Beetle.
CB Hideaway 1.5" header with 2" pipe X 12 - 14" extension to the T3 turbo, a Holley 600 feeding into the turbo.
2110 stroker with Ponchito heads, 1.25 rockers, CB 2246 cam, straight cut gears, full flow, 8.3-1 cr.

As always, opinions are appreciated..
Mark
Last edited by Blownbug on Sat Aug 03, 2019 2:17 pm, edited 1 time in total.
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buguy
Posts: 6209
Joined: Wed Jan 26, 2005 8:53 pm

Re: Draw thru using a CB Hideaway header?

Post by buguy »

Of course it will work! Really any header can be made to work. Just have to make the appropriate up pipe.
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Dan Dryden
Posts: 488
Joined: Mon Nov 05, 2007 12:56 am

Re: Draw thru using a CB Hideaway header?

Post by Dan Dryden »

It won’t work very well.
The air/fuel mix will need to travel uphill from the turbo compressor to the inlet valves.
You’ll probably find that it’ll be a pig to tune because all of the low air speeds during cruise will mean lots of fuel puddling....
for draw thru, you really need to mount the turbo higher than the inlet valves.
Blownbug
Posts: 26
Joined: Thu Feb 14, 2019 11:09 am

Re: Draw thru using a CB Hideaway header?

Post by Blownbug »

Dan,
The way I plan to set it up is using a 12" to 14" extension from the turbo header (UP) to the Turbo in which will be sitting right above the Alternator on the left side.. The Holley will feed right into the side of the Turbo and blow DOWN into the intake pipe to the heads.
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Dan Dryden
Posts: 488
Joined: Mon Nov 05, 2007 12:56 am

Re: Draw thru using a CB Hideaway header?

Post by Dan Dryden »

Blownbug wrote: Sat Aug 03, 2019 2:15 pm Dan,
The way I plan to set it up is using a 12" to 14" extension from the turbo header (UP) to the Turbo in which will be sitting right above the Alternator on the left side.. The Holley will feed right into the side of the Turbo and blow DOWN into the intake pipe to the heads.
Ahhhh! Ok. That should work. 😁👍
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WickedWagens
Posts: 775
Joined: Fri Sep 02, 2005 9:33 pm

Re: Draw thru using a CB Hideaway header?

Post by WickedWagens »

Like this?
No reason it wouldnt work.
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1968 Karmann Ghia land speed
G/CFALT 106.643 MPH G/CGALT 113.131 MPH
G/CBGALT 169.462 MPH G/CBFALT 146.715 MPH
G/CBGC 158.242 MPH H/CBGC 94.334 MPH
H/CPRO 93.383 MPH H/CBFALT 101.282 MPH
H/CBGALT 120.591 MPH
Top Speed 174.2 MPH
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