Thread: V8 Inlet Manifold Gasket Options

G`day ,

if you using a flat packed gasket what you have is pretty normal , if you have an old composite you`ll see they are shaped and the fit is neater .

If you shape the tin to the composite it should give the same out come .

The tin gasket will wrinkle easily if too much pressure is exerted where it shouldn`t be .

Are you using the shaped/curved or straight end seals , the ones for yours should be shaped/curved ?

Are you aware of the tightening sequence suggested by LR for the composite gaskets that would also apply to tin , it`s in the manual ?

The heads need a few mm off for the gasket fit to be a problem and then the inlet gasket faces on the heads are machined . It should be done at the same time as the head surfaces are machined . The inlet manifold its self should be untouched . There is a formula that applies to any V8 .

Originally Posted by PLR

G`day ,

if you using a flat packed gasket what you have is pretty normal , if you have an old composite you`ll see they are shaped and the fit is neater .

If you shape the tin to the composite it should give the same out come .

The tin gasket will wrinkle easily if too much pressure is exerted where it shouldn`t be .

Are you using the shaped/curved or straight end seals , the ones for yours should be shaped/curved ?

Are you aware of the tightening sequence suggested by LR for the composite gaskets that would also apply to tin , it`s in the manual ?

The heads need a few mm off for the gasket fit to be a problem and then the inlet gasket faces on the heads are machined . It should be done at the same time as the head surfaces are machined . The inlet manifold its self should be untouched . There is a formula that applies to any V8 that applies .

G'day,

Yes i notice the tin gasket is flat and a little springy, I don't have an old gasket but i can curve it to the shape of the engine.

I have the correct curved end seals and yes RAVE is by my side

Not sure if the faces were machined when the heads were or not.

I'll have a another look in the next day or so and see if I think this gasket can make the grade or if I need to look at a composite version.

Originally Posted by Roverlord off road spares

Careful on the end clamps, they are only supposed to be lightly torqued if over tightened ( not hard to do) they will cause a leak at the end seals.
I have found that end seals always seem to be too long, I've tried different brands and Genuine and they just seem to buckle.
as Phil A said, they need trimming and don;t forget the dob of RTV on the ends.

I only tightened them by hand, RAVE says 0.5 ft/lb for them so not tight at all. I'll trim them up a little and make sure they fit, they definitely looked a whisker too long.

Originally Posted by TheTree

I only tightened them by hand, RAVE says 0.5 ft/lb for them so not tight at all. I'll trim them up a little and make sure they fit, they definitely looked a whisker too long.

I've always found the end gaskets to be a pain to fit, they always seem to long, and move when you try to fit the retaining plates, fiddly, but one done they seem to mould themselves into position.

There is no way the tin gasket is going to fit, I have trimmed the end rubbers but it still will not sit properly.

So it's a composite gasket next !

Steve

Well I got an ehlring composite gasket from Mario and it fits a bit better but still not as good as it should be.

When I lay the gasket on without the end rubbers it fits perfectly so now I am beginning to think they may be issue.

Wondering if the genuine rubbers may be a little thinner.

Has anyone ever had genuine v aftermarket issues with these rubbers?

At least the composite gasket can be fettled a little to get it to fit properly.

Steve

Well on and off a few times with the ehelring gasket, which is a shaped rubber coated job not the classic composite style, using a dremel style tool I was able to get a good fit around the ports and the bolt holes

Back together and running smoothly now

Thanks all for your help !

Steve