Author Topic: Compound pics (Read 109534 times)

subsonic · « **Reply #210 on:** May 08, 2007, 10:34:10 am »

Quote from: foxracer1

So please explain the diff. between a firering and an o-ring. I thought i understood this but now i don't think i do.

This is a pretty good explanation. It's chapter 13. (pg156-165) Pg 160 has the pictures. The whole chapter gives good detail on the process.

http://www.freetrust.be/piaa1/Maximum_boost.pdf

Vincent Waldon · « **Reply #211 on:** May 08, 2007, 11:59:19 am »

Fantastic book Subsonic... thanks muchly !!

Vince

foxracer1 · « **Reply #212 on:** May 08, 2007, 12:22:20 pm »

ahh yes i read that book already. Very good piece. But now it seems i must go read it again. Thanks for the info.

subsonic · « **Reply #213 on:** May 08, 2007, 12:42:49 pm »

Just a quick note. I have this book, but the book is on the forum courtesy of Benjamin.

jtanguay · « **Reply #214 on:** May 08, 2007, 05:09:36 pm »

i wonder if it would be possible to o-ring the oil and coolant passages as well... hmmm? that might help quite a bit

andy2 · « **Reply #215 on:** May 08, 2007, 05:20:50 pm »

Bruce put a rubber o-ring around the oil pressure supply port to the head gasket,it worked perfectly.The coolant ports would hold alright if there wasn't serious compression entering the cooling system.I'll have it apart hopefully soon enough to take another stab at it.

rallydiesel · « **Reply #216 on:** June 21, 2007, 06:21:40 pm »

Anything new happening with this beast?

malone · « **Reply #217 on:** June 22, 2007, 11:17:42 am »

andy2 is the only person I know who is actively trying to resolve the recently popular big boost > hg leak issue. I'm crossing fingers that this will work out!

Mark(The Miser)UK · « **Reply #218 on:** June 22, 2007, 05:48:24 pm »

Anybody ever tried easing the pressure on the head gasket by using ring inserts that fit in the block and the head. I'm sure one of my old cars from the seventies had these. Perhaps something made of copper for the oil supply rather than an 'o' ring... :idea:

Helliouse · « **Reply #219 on:** July 03, 2007, 06:37:55 pm »

Hate to drag this up but any updates?

I am eager to hear if it is working or not.

andy2 · « **Reply #220 on:** July 03, 2007, 10:50:32 pm »

Yes, I've temporarely gave up on the compounds :oops:.Too many issues with it so we are going to run the hx30 as a single turbo.I'll have it together soon enough to have results.The cyl head still needs to come off for some more work but I need to get the turbo business figured out first as it just may be the biggest contrubiting factor for the gasket failing.

935racer · « **Reply #221 on:** July 04, 2007, 01:02:25 am »

What else are you planning on doing to the head at this point?

hillfolk'r · « **Reply #222 on:** July 04, 2007, 01:28:48 am »

Quote from: QuickTD

Quote from: andy2

Shame about the whole setup not working as well as expected...

i hear ya on that,,,same thing goin on here with my hy/hx hybrid on the tdi....too much lag,,but it wants to rev to the moon when it comes on around 33-3500 or so
pioneers get shot in the hiney with arrows,sometimes we slipthru,but other times we get hit........
i think you aughta try that compound setup on a tdi....i think mine got to somewhere around 40- 45 psi,maybe 50 the way it pegged the 30 psi guage around so quickly before it blew a headgasket
at least i got in 4 or 5 gtech 1/4 runs to give me an idea of what was goin on
theres too much fuel goin on for a prechamber engine to handle for any amount of time,imo

andy2 · « **Reply #223 on:** July 04, 2007, 07:57:33 am »

One of the head studs threads is stripped completely so that needs to be fixed.We may also get the head cryo treated and/or just try a stock head gasket on this setup to see if it holds any better or worse.The hx30 should get to 30-35 psi without too much lag.I figgured that the hx/hy combo would have worked well hilfolk'r,mabye the hx30 will work for you as well.Do you know what fueling your pump is set to.

Helliouse · « **Reply #224 on:** July 04, 2007, 11:30:55 am »

Did you o-ring the block? how did that work?
What size of head studs are you using (I think due to your striped one you are having to go to 14-15mm)?
If you do the bigger head studs, you have to drill out the wholes, and re-tap the treads in? Assuming so.

What about a big VNT?

Are your compound problems to do with pluming the exhaust to the second turbo (I read the whole thread and it sounds like this is your problem.)?

I have an idea for the head thing, I will draw it up and post it, and see what kind of feed back you buys give me on it.
I have a few concerns about it, but some of you have way more experience then me, so I am hopeing you will be able to tell me if I am way off the mark or not.

Andy2, thanks for the post, it has helped me learn a lot. Hope you keep us updated on your progress. I know I will keep bugging you for updates! :wink:

Author Topic: Compound pics (Read 109534 times)

andy2

andy2

935racer

andy2