Throttle plate spindle leaking under boost?

SuperV8 · Post by **SuperV8** » Mon Sep 20, 2010 11:52 am

I'm running a cenrtifugal supercharger on my 4.6 V8.

Just rebuilt my plenum and been thinking does anyone have boost leaking problems arround the throttle plate spindle? I hope to be getting 8 - 10psi.

There is some very slight play in the spindle. If I should seal it any ideas?

Thanks,
Tom.

SuperV8 · Post by **SuperV8** » Tue Sep 28, 2010 11:40 am

Any one got any thoughts/ideas?

Tom.

Eliot · Post by **Eliot** » Tue Sep 28, 2010 12:14 pm

You should still make reasonable boost. I forgot to refit my 1/2" air temperature sensor to the plenum and still still made good boost, I could just hear a whistling of air.
It would have to be pretty sloppy to leak badly and I'm yet to see one that is worn even slightly.

stevieturbo · Post by **stevieturbo** » Tue Sep 28, 2010 4:40 pm

The only times it would be a concern....

would be if the spindle itself was so bad, the throttle blade wasnt working properly.

Or if it was a carbed blow through setup, where lots of fuel was getting expelled from the spindle.

other than that, I wouldnt worry. It will be so small as to have zero impact.

SuperV8 · Post by **SuperV8** » Tue Sep 28, 2010 6:58 pm

Cheers chaps, 1 less thing to worry about!

Tom.

Eliot · Post by **Eliot** » Tue Sep 28, 2010 8:21 pm

Here's the photo's of me pressure testing my manifold, you can see the leaks I had and also the great big air temp sensor I left of once and still made power.

SuperV8 · Post by **SuperV8** » Wed Sep 29, 2010 11:19 am

Elliot, can't see the photo?

Eliot · Post by **Eliot** » Wed Sep 29, 2010 7:32 pm

oops
http://www.mez.co.uk/turbo9.html