My plans are to put a Stealth Ram on a SC (Vortech V-1 S trim) engine. I keep reading referances to them leaking under boost. Even the Holley site mentions special precautions are need for boost applications. My question is, does anyone have direct experience with an HSR under boost, and if you do, have you seen leak issues? If you have seen leak issues, what was the cure? I am shooting for 10lbs at 5800 rpm. Any info would be appreciated.

Gary
Kingston,NH

 

D@mmit, that'd BETTER NOT be true! I'm putting together parts for a beefy forced-induction engine using AFR heads, fully-forged rotating assembly, & an HSR sitting on top of it...

Care to state where you're hearing this from, maybe show a pointer to that part of the Holley site??

 

• May require additional sealing modifications for high boost blow
through applications.

From the Weiand manifold catalog.

http://www.holley.com/data/Catalogs/...0Manifolds.pdf

 

9psi and no problem, will se next year with 15psi.......

/N.

 

Can't be any worse then my TPI setup and I have no problems so far.

 

It sure as hell does say that...

Only thing I can think of is that they're talking about where the plenum connects to the base manifold - the gaskets they provided w/ my manifold don't look like they'd be especially effective for retaining that kind of pressure... (Then again, I'm sure that they weren't designed to do that either...)

Either that, or where the TB mounts to the plenum - but I doubt that's the case, since a lot of people have utilized the same kind of setup w/ forced induction & TPI/Miniram/Superram combos...

Anyone think that a person could get some rubber gasket material, cut it to the proper shape, & have it seal correctly up to maybe 15# or so?? (Talking about the plenum->base connection.)

 

How about no gasket and some anerobic sealer? That would hold just about anything.

 

Another option:

 

Yeah, THAT should hold the boost all right!

I'm afraid I'm not recognizing the term "anaerobic sealer" (although I know I've heard it before) - is there a brand name or a nickname that I'd recognize??

 

RTV?

 

Considering the plenum is big, then the force is pretty big. You could fit check it for flatness first. If it is real close then I would RTV it without gaskets. Worst case you could JB-weld it w/o gaskets and torque the bolts with threadlock.

 

It is not the plenum size that creates the force, it is the area of the openings.
The openings are about 16 sq.in each.
At 15 psi that creates a 15 x 16 x 2 = 480 pound lift on the plenum. 120 pound on each plenum bolt.

 

Jonas.
I went to your web site. Nice pics of the HSR weld mods. I Think I am going the same route, without having to lower the plenum. Great idea that should give me the upgrade route I was looking for. Thanks for the info.

 

what if you tapped the bolt holes out bigger? I havent seen one in person i am ordering one at the end of the month so i can bump my boost from 13 to 20. probly have to get it welded.

 

I ran min all last year with 15-16lbs. of boost never had a problem. All I did was use the gaskets from Holley to make a template and cut out gaskets out of that thick gasket sheet material. Works Great!