Griff new owner

[edgun]

Hello everyone,back in the Tvr fold having owned two wedges in the very distant past.had the griff about a month,and working through bits and bobs that need doing.now this is probably a daft question does my griff 500hc have cats?previous owner says no it doesn’t,car registered may 1994.
Thanks for replies in advance.

[frontfloater]

Lovely looking car, great colour combination.

[Belle427]

Show us a photo of the engine bay, it would have had one as standard so the previous owner/s must have removed it or fitted a decat y piece.
Will be an issue come Mot time sadly if its gone, spares are available though.

[lancepar]

If it's precat it will look something like this, just big pipes and best sound.

This is a 400-250bhp

[sixor8]

If you have the collector that is connected to the manifolds with clips instead of bolts, it will be a catalyst car. I would expect it to be if it is a 1994 car. There was a crossover period in early 1993 where some manufacturers had cars still to be registered, but as a low volume seller, TVR made all the 500s with cats, unless it was an export repatriated?

There's a chance someone may have gutted it to remove the honeycomb catalyst internals and there are also pre-cats inside the manifold to reduce emissions when the engine is cold. Even more of these have been removed. Emission tests are done on a warm engine so it should pass if the main cat is still in place. Some cars can be run lean enough to pass the test without a cat fitted, but unlikely in this case! There are the cliché 'friendly' MoT testers of course.

[edgun]

Thanks everyone looks like it has cats,big y piece with clamps and not bolts,last owner for 13 years was a doctor and not really a hands on guy,anything needed done was put into a garage.

[edgun]

Ok,where exactly are the precats?difficult job to delete them?

[sixor8]

The precats are inside the exhaust manifolds. There are several threads on here regarding them no doubt, here's one I found with a search. It's not easy and they'd have to come off the car to do it:

https://www.pistonheads.com/gassing/topic.asp?t=16...

[edgun]

Many thanks for that.sounds a bit of a nightmare to do.so the precats are in the exhaust manifold as it comes out of the head so eight in all?as you can tell Ime no mechanic 👍

[sixor8]

I've not done it myself, but AIUI, it is a honeycomb structure in the body of the manifold close to the connection with the Y piece, so 1 on each side.

[citizen smith]

edgun said:

Hello everyone,back in the Tvr fold having owned two wedges in the very distant past.had the griff about a month,and working through bits and bobs that need doing.now this is probably a daft question does my griff 500hc have cats?previous owner says no it doesn t,car registered may 1994.
Thanks for replies in advance.

If it was registered in Jersey, than it probably will not have a Catalytic Converter.

[edgun]

sixor8 said:

I've not done it myself, but AIUI, it is a honeycomb structure in the body of the manifold close to the connection with the Y piece, so 1 on each side.

Great info thanks might have a go.

[edgun]

Ok pic of engine bay just for info

[Belle427]

Certainly looks like the standard dustbin cat.

[Yatesy350i]

If you are looking for an upgrade. I recommend Clive Ford. Mine was done by the previous owner and sounds amazing. With the addition of a modern ECU it's also got the power to about where TVR quoted. 334BHP as opposed to 280-290bhp for a factory 500.

[edgun]

Oooooft that looks awesome,I still need a cat though.a lot of money spent there.

[davidd]

edgun said:

Oooooft that looks awesome,I still need a cat though.a lot of money spent there.

Clive does a sports cat as well (on my list of upgrades)

[Sardonicus]

If that was mine Id get that junk coolant out ASAP Evans? lovely looking car BTW enjoy

[edgun]

Was wondering about that Evan’s stuff,what do I need to do to get rid of?just the liquid or a new system?

[Belle427]

Its known as a waterless coolant, never used it personally but to get rid you would need to drain the system, flush thoroughly with clean water and refill with the correct stuff.
Don`t think it requires any special procedures but worth checking first.

Edited by Belle427 on Friday 17th April 19:10