View Full Version : Changing the top hat on a Z20LET?
Just wanted to now how easy it is to change the Top Hat on the Z20LET as i have got a chromed one coming from Glenn Yale ?
Do i need a gasket or anything?
has anyone got any pics with this off?
Thanks for your help :)
just had a look at my top hat and there aint anything on that , its just a face to face fit.
montyfox
09-04-2007, 15:02
Dead easy to remove the top hat, just 4 long bolts that go all the way down thgru the top hat, TB and into the inlet manifold.removal of these bolts would allow you to remove the TB as well for a clean while you are at it.
There aren't gaskets as such between the assemblie but thin rubber sealing rings which need to be correctly located, check before you put it all back.Chances are that these seals won't actually be disturbed anyway.
montyfox
09-04-2007, 15:03
Forgot to say that you will have to remove the xover pipe as well, or at least the nut that joins it to the tophat.
A big CHEERS fellas for the help :) :) :)
There should be a O-ring in between the top hat and TB
SEAL RING THROTTLE VALVE BODY - 90424048
There should be a O-ring in between the top hat and TB
SEAL RING THROTTLE VALVE BODY - 90424048
so do you mean i will need to replace this part?
Depends - you may get away with turning it over, but you many need a new one, or you'll get a leak
montyfox
09-04-2007, 17:35
I've had my tophat off many times and don't seem to have any leaks/problems in that area.
It may be prudent though to get a spare replacement just in case though!
I'm sure I've read on here a while back that some owners have removed the TB/tophat etc and they have reported that they have no rubber seal in place at all, which seems a bit odd.
Scottyboy
09-04-2007, 18:50
Some ZLET's seem to have the 'O' ring and some don't
mattcoupturbo
09-04-2007, 18:57
Yeah strange that, mine doesn't have it either.