Flywheel side breather, pics, theory

[74 Thing]

Post here for people like me James who love the technical aspect of vw engineering and like to learn from other people. Thanks!

[vwracerdave]

James, I appreciated the idea.
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2017 Street Comp Champion - Thunder Valley Raceway Park - Noble, OK
2010 Sportsman ET Champion - Mid-America Dragway - Arkansas City, KS
1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK

[Dale M.]

(regarding post 1 and 3 being edited to nothing by jamestwo on Sunday 10:47 pm)


So...Instead of promoting your theory, you choose to play the hurt victim and pull your posts....

Makes one wonder of the validity of your argument to begin with...

No this is not a post to bust your chops.. It's to point out you invalidate your arguments by pulling the source information that you need to validate your theory...

With Respect.

Dale
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All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...

[Jimmy111]

James. most of us who posted here in this post Do understand your theory. But most of the people who look at this post dont. I just pointed out what anyone would say who has opened and looked at a case.
Now prove your point.

[jamestwo]

First off Dale, it was not a "theory" maybe the word theory threw you off, it was meant to imply that the post included the theory of how it works. it's no more of a theory than headers, head porting, after market cams or any other improvement for more HP, it's an established, tried and true method of getting more HP. I agree it's not as popular, but the people who have been around race cars didn't think this was a ground breaking idea.

Second, it's not mine, I've seen pictures from the 70's with top side vents on the front( flywheel) side of the case. I was simply attempting showing a few people who had asked me about how it worked. As others have noted , this is NOT new. Lots of racers have done this, i even seen a picture of Berg race engine with two huge -12 hose connections near the flywheel.

Third, you attempted to debate the idea with your own warped and incorrect notion of how the engine works. You need to wonder out to the garage and actually take the engine apart and look at before trying to correct me.

Lastly, the info was only for the few people here who actually race a large displacement engine or wanted to know about. If you and Jimmy think it's a bad idea, then don't do it.

I don't have a reason to prove this to you or Jimmy. I'm not selling anything, not getting a penny from it, and don't have time to explain to you two. You act like i'm trying to sell you snake oil or convert you to a new religion.

The pictures are still under my profile and the OP is on the cal-look forum.

[joescoolcustoms]

jamestwo

I came in late on this thread but I have a few questions:
1. Where is the PCV valve located? I did not see them in the pictures. At the end of the tubing, possibly in the header reed valve.
2. What kind of vacuum would one expect? Low numbers I would think, a couple inches of water maybe, (some is a whole lot better than none or positive pressure).
3. Would it work better if the internal webs between the 1-3, 2-4 were blocked off to isolate the individual chambers?
4. How does this effect head valve cover area venting/vapor?

I am building a 2332 drag engine and this is extreamly interesting to me. Thanks for taking the time posting it.
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Everyone is gifted. Some just do not open the package.

Looks like it was painted with a live chicken,polished with a brick and buffed with a pine cone

[jamestwo]

Thanks Joe, I ran the largest in line pcv valve i could find on the breather from the front fuel pump. On the flywheel side breather, i ran it to a catch can, along with the a line from the drivers side valve cover. the catch can had a PCV breather on it .

You also need to run a sand seal. there are some high quality PCV valves made if you have the money. google "krank vents".
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hEY, lOOK, i'M WRONG HALF THE TIME, AND THE OTHER HALF i'M NOT SURE WHAT THE HECK i'M TALKING ABOUT. MY POST ARE FOR MY OWN ENTERTAINMENT VALUE ONLY.

[Ohio Tom]

Race secrets 101:

Case porting- I have found it's possible to enlarge the top side of the #2 bearing web significantly w/o too much trouble.
Just clearance the roof of the case as you would for an 82 stroke crank journal. But, center it on the bearing web. It will open up a rather large air passage, thus adding significatly to the total flow.

This can be enhanced with these new "Pent roof" aluminum cases. The passage can be opened up to double it's original size easily.

I always like to go over the inside of any new case with a rotary file and do any flash cleaup work and case porting. It only takes a few minutes, and it's worth some real HP...

[VW Vet]

Here are two pictures to add some information about the crankcase #2 web apertures.

[jamestwo]

I think more HP can be had from a raised roof case just for that reason Tom.

[Bashr52]

I've never really noticed that window in the case before untill you mentioned it, I had to go look at a stock case and see. Now my question is how much to port/open it up, and im assuming both sides should be done as well. My question is should I be worried about getting them opened up exactly the same, or since it is simply equaling out the air pressure it really doesnt matter?

[Mark]

[jamestwo]

man, I'm an arrogant ass sometimes...
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hEY, lOOK, i'M WRONG HALF THE TIME, AND THE OTHER HALF i'M NOT SURE WHAT THE HECK i'M TALKING ABOUT. MY POST ARE FOR MY OWN ENTERTAINMENT VALUE ONLY.

[grimace007]

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