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Extractor Flange Question? Small 3 Bolt and Large 3 Bolt

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DylanTheDubber Custom Title Time!

1,252 posts · joined Jun 2009 ·

#909799
Do you Get more Performance on a 1600cc Mild engine from a Small 3 Bolt Flange extractors or Large 3 Bolt Flange?

Or Is There Not much Difference?

From Dylan

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 ·

#909800
go the smaller one

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#909805
Yes
I agree,
You are looking for extraction of gases... Extractors...

so the smaller ones... extract better than just a large pipe...

|LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

DylanTheDubber Custom Title Time!

1,252 posts · joined Jun 2009 ·

#909860
Okay Thankyou, Cause I Have a small 2 bolt extractors. I Will run a hotdog muffler with.

From Dylan

sander288 "Bolt-on Master"

1,404 posts · joined Aug 2008 ·

#909864
You'll find the pipe size is bigger on the large flange if they are EMPI headers.

The large 3 bolt is 1.5 inch and the small bolt is 1 3/8" which is ALOT better for a mild 1600,
if you went to big you'd find you'll loose some of your bottom end, which with your single carb is where your going to perform best!

Shaun
BMW R65 LS
1967 1300 Deluxe
Swing-axles FTW ❗

DylanTheDubber Custom Title Time!

1,252 posts · joined Jun 2009 ·

#909867
Cheers Mate!

From Dylan