Chimaera/Griffith Y Piece required
Chimaera/Griffith Y Piece required
Author
Discussion

Mark_S_24

Original Poster:

405 posts

199 months

Wednesday 5th October 2016
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Hi All,

I'm doing a body off and when I took the Y Piece off, it rattles :-(

So does anyone have either a Y Piece that doesn't rattle, or a ACT/Clive F Y Piece that they are willing to sell?

Cheers
Mark

phazed

22,455 posts

227 months

Thursday 6th October 2016
quotequote all
I have a decatted Y piece, wrapped and has a boss for a wideband sensor.

Mark_S_24

Original Poster:

405 posts

199 months

Thursday 6th October 2016
quotequote all
Hi Peter,

Wrapped to post or wrapped against heat :-)

And I'd have the 2 lambda holes in the manifolds, how easy would it be to block up the one in your Y Piece?

And if you like you can PM me a price & cost of Shipping.
I'd ask a mate who lives in Andover to bring it up at Xmas... but he drives a VX220 & I'm not sure he could transport a Sandwich to me now :-) (but I will ask in case he takes his other half's Mini)

Cheers
Mark

jimed

1,508 posts

229 months

Friday 7th October 2016
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I'm not an expert on Y pieces but the rattling from the one off your own car is presumably because the cat is breaking up. If you went the whole hog and removed the remains of the cat that would put you in the same position as with the replacement one but with the correct lambda so if that is easy to do maybe that might be a simpler way ahead?? (Maybe I'm missing something and the cat isn't easy to get out? No doubt an expert will be along to advise).
Jim

ClassiChimi

12,424 posts

172 months

Friday 7th October 2016
quotequote all
It could be the pre cats rattling. They have been known to come loose.

Removal of main cat normally requires cutting open the pipe around the cat area, remove cat then weld it back up again.

Wrapping the Y or even just the cat area afterwards helps to deaden the sound.
Less heat inside engine bay is a bonus.
The sound isn't to everyone's liking, it's loud.

Less low down torque ( marginal) but def more HP at the top end if your engines running a good cam.
IMHO

marcus1875

1,512 posts

165 months

Friday 7th October 2016
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Hi Mark, did you speak to Colin about taking the cats out?
I hope to be up on Sunday for a couple of hours if you need a hand.
Marcus

andy43

12,572 posts

277 months

Friday 7th October 2016
quotequote all
An m18 wideband blank is a couple of quid on ebay. Getting the main cat out without cutting open and rewelding would be an orrible task!

Mark_S_24

Original Poster:

405 posts

199 months

Friday 7th October 2016
quotequote all
Hi All,

The Pre-Cats look solid & in place.
It's the Y Piece & yes I assume the Main cat has broken up, hence the requirement for one that isn't going to cause an issue.

Marcus, I'm going to leave the Pre Cats in & see if it'll be ok with just those & no main cat. Depends on how nice an MOTer I can find :-)

Cheers
Mark