Tapping noise coming from Plenum Chamber

[Bensonv8]

While i was out for a at lunch time i noticed a tapping noise coming from the engine.
When i got back to work i popped the bonnet and the tapping is coming from the front of the plenum chamber. I put my hand on the front of the plenum chamber and the sound is deadend slightly as well as being able to feel it tapping.

I have searched and found a thread that says they are bolted in, and another which says they are glued in with JB Weld.

Can anyone confirm either of these options?

It would be nice to have a plan up my sleeve before i start taking it apart.

Any other advise on fixing this problem would also be appreciated.

Thanks
Bensonv8

[scotty_d]

Is it maybie the steper motor? only thing i can think of that moves in that area?

[chrispitman]

One of the bolts or trumpets could have come loose, remove the 6 allen bolts and lift the plenum off takes abit of wiggling to get past the mesh at bottom of screen. Get some silicon hylomar (Blue) to seal the plenum when you reassemble.

Or as said could be the stepper, just pull the plug to see if it stopps.

Edited by chrispitman on Friday 14th November 17:18

[Bensonv8]

Thanks for that, but it is definatly not the stepper motor

[spend]

Loose trumpets ditch em & blend the base, no chance of em coming loose then and a weight saving to boot

[slideways]

nah its the tvr gremlins trying to escape

[Pasco]

My money is on a manifold gasket leek

It makes a ticking type noise that sounds like badly adjusted tappets

[Bensonv8]

Pasco said:

My money is on a manifold gasket leek

It makes a ticking type noise that sounds like badly adjusted tappets

But would you be able to feel it tapping when you put your hand on the plenum chamber ??
And the tapping gets quieter as the revs pick up. my thinking is that one of the front trumpets is popping up and down and hitting the plenum chamber. ??

[Pasco]

Bensonv8 said:

Pasco said:

My money is on a manifold gasket leek

It makes a ticking type noise that sounds like badly adjusted tappets

But would you be able to feel it tapping when you put your hand on the plenum chamber ??
And the tapping gets quieter as the revs pick up. my thinking is that one of the front trumpets is popping up and down and hitting the plenum chamber. ??

No i don't think so mate.... If that is the case then you must be the Firt I have ever heard of TBH.

If you think that is the case just undo the six plenum bolts and check if the trumpets are in place which i'm sure they will be.

[Boosted LS1]

Anyone for skittles

[Pasco]

Just a thought Mike

[Boosted LS1]

We could flick a golf ball up the intake with a catapault. Put a shilling on the side and see who wins.

[MADMAX2]

Boosted LS1 said:

We could flick a golf ball up the intake with a catapault. Put a shilling on the side and see who wins.

What the FK is a SHILLING???????????

[spend]

Its what we put in his Xmas puddings......



and he thinks we are being generous

[Pasco]

Boosted LS1 said:

We could flick a golf ball up the intake with a catapault. Put a shilling on the side and see who wins.

[Boosted LS1]

spend said:

Its what we put in his Xmas puddings......



and he thinks we are being generous

LOL, It's what you get out of your purse when you order a round

[Boosted LS1]

MADMAX2 said:

Boosted LS1 said:

We could flick a golf ball up the intake with a catapault. Put a shilling on the side and see who wins.

What the FK is a SHILLING???????????

Haven't you heard the line from a well known song "and just to make it interesting we'll put a shilling on the side". Fond memories

[spend]

..still used I believe, bloodstock is sold in Guineas, as 20 shillings (a pound) to the seller, and 1 shilling on the side to the auctioneer

[Badmutha]

MADMAX2 said:

Boosted LS1 said:

We could flick a golf ball up the intake with a catapault. Put a shilling on the side and see who wins.

What the FK is a SHILLING???????????




Half a Florin!! Didn't you know THAT?

[Bensonv8]

What are you lot going on about !??
there's probably something for you in the hobbies forums

Anyway,.......

Yep third trumpet from the front was loose, it came out very easily and it had marked the roof of the plenum chamber. All cleaned and re-assembled. just giving the araldite plenty of time to set before i take it for a road test.

Edited by Bensonv8 on Saturday 15th November 15:18