Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts  See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
VW Cylinder Head Quick Reference Sheet
Page: Previous  1, 2, 3, 4, 5, 6
Forum Index -> Performance/Engines/Transmissions Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
Jebchevelle
Samba Member


Joined: May 25, 2019
Posts: 34
Location: colorado
Jebchevelle is offline 

PostPosted: Fri Sep 13, 2019 6:34 pm    Post subject: Re: VW Cylinder Head Quick Reference Sheet Reply with quote

[email protected] wrote:
Jebchevelle wrote:
AlteWagen wrote:
I was only able to get one number for the L3 head from John at AC.net. I asked Johnny who was our rep from AA if they had any numbers for any of their heads and he said no.

I think that the improved flow over a stock head when comparing the L3 is due to the combustion chamber shape. All of the ports Ive measured as cast were SMALLER than a stock head.

I too would love to see out of the box flow numbers for the 500 series.


I just purchased a set and am in no hurry maybe I could find a place to flow bench them? maybe painter's grinders in denver? I was gonna have them redo my stock heads but since the price was a wash I purchased the new heads setup as I figured I would need them. might have wasted my money time will tell, my heads need exhaust stud repairs and machine work pus the one head has a warped rail where the valve cover sits and leaks oil without a tone of sealer. was told $300 plus to fix them and put on hi rev springs. So new heads it is. I got mine with the 35.5mm intake and 32mm exhaust so may be no better then stock.


It wouldn't be a bad idea to flow test them but you will have a few hurdles to overcome to accomplish that. One, you will need a fixture as most race shops aren't equipped to flow a VW head. I had to build my own fixture. Two, you need to recreate how all the other companies flow tested their heads as close as possible otherwise your results won't mean much. Three, you need to have another head in hand as a "test" that has published flow numbers so as to qualify the bench that you are using. Flow testing a VW head is no simple 10 min in and out of the shop job. You need to make sure your test is accurate otherwise you may be heaping undue praise or undue slander on the company whose heads you are testing. I spent many thousands of dollars and over a year and a half of time flow testing my heads before I felt comfortable publishing the results. I also bought multiple competitors heads that had published flow numbers so I could make 100% sure that the results I got on my heads were accurate.

That is why I thought about painter's grinders they are the local vw experts here. I have no clue who else could or would do it.
Back to top
View user's profile Send private message Classifieds Feedback
AlteWagen
Troll


Joined: February 23, 2007
Posts: 7821

AlteWagen is offline 

PostPosted: Sat Sep 28, 2019 5:52 pm    Post subject: Re: VW Cylinder Head Quick Reference Sheet Reply with quote

Outflow CB Strip Dominators? 279cfm, wonder what pressure they are using

Image may have been reduced in size. Click image to view fullscreen.

_________________
Grapes of Wrath $200 Engine Rebuild
Official Dual Carb Thread
Cylinder Head Quick Reference Sheet
Back to top
View user's profile Send private message Facebook Gallery Classifieds Feedback
AlteWagen
Troll


Joined: February 23, 2007
Posts: 7821

AlteWagen is offline 

PostPosted: Mon Feb 17, 2020 4:41 pm    Post subject: Re: VW Cylinder Head Quick Reference Sheet Reply with quote

Looks like Autolinea has a new casting for their 043 clone. Anyone get a close look at them yet?


Image may have been reduced in size. Click image to view fullscreen.






Is it just me or does it look like CBs Panchito casting?
_________________
Grapes of Wrath $200 Engine Rebuild
Official Dual Carb Thread
Cylinder Head Quick Reference Sheet
Back to top
View user's profile Send private message Facebook Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Performance/Engines/Transmissions All times are Mountain Standard Time/Pacific Daylight Savings Time
Page: Previous  1, 2, 3, 4, 5, 6
Page 6 of 6

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2020, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB