28 replies to this topic

[Dusky]

Mine is using those locating rings.

Will be fitting the manifold next week( read today ) to a CAM 4810 manifold ( it is a bit reworked though).

Will it fit? How can I make it fit if the locating rings don't work?

My heads inlet looks like this : https://www.facebook...46&l=b5f3b64a84

[Fast Ivan]

link not working for me

[Captain Mainwaring]

you don't need to use the rings.

[Dusky]

you don't need to use the rings.

But how do you line it up then?

[Captain Mainwaring]

How much movement do you have between the manifold and the fixing studs ?

[The Matt]

You can port match the manifold to the head if you want super-accurate alignment.

Do it with the carb/carbs off. Align them as aligned as an aligned thing can be, then dowel it so it's always pefectly as aligned as a perfectly aligned thing can be! You just need to be willing to drill a little hole or two through your inlet and into your head's gasket face.

It's not an issue on my new inlet, the ports align pretty good and there's very little room to get it wrong as the holes in the manifold aren't massively oversized. My locating ring seats in my head are long gone as it's been ported....so I've gone way off topic here.

[Dusky]

How much movement do you have between the manifold and the fixing studs ?

Around 1 finger  

 

You can port match the manifold to the head if you want super-accurate alignment.

Do it with the carb/carbs off. Align them as aligned as an aligned thing can be, then dowel it so it's always pefectly as aligned as a perfectly aligned thing can be! You just need to be willing to drill a little hole or two through your inlet and into your head's gasket face.

It's not an issue on my new inlet, the ports align pretty good and there's very little room to get it wrong as the holes in the manifold aren't massively oversized. My locating ring seats in my head are long gone as it's been ported....so I've gone way off topic here.

Is there any chance to hit a water/oil gallery in this way? 

 

The fun fact is that my balancing tube rests on my exhaust manifold, so I think that I cant really get it wrong...

I'll await your answer about the dowel, and I probably need to get the engine out to do that?

[Ethel]

I don't find it an issue fitting with the locating rings, fit them to the manifold, you can use loctite, and fettle them to be a slip fit on the gasket and head.

 

If you don't use them you can trace the outline of the manifold onto the gasket, to give  the best fit, before assembly. Having a step can be beneficial to reducing flow reversion if it's the right way round.

[Dusky]

I don't find it an issue fitting with the locating rings, fit them to the manifold, you can use loctite, and fettle them to be a slip fit on the gasket and head.

 

If you don't use them you can trace the outline of the manifold onto the gasket, to give  the best fit, before assembly. Having a step can be beneficial to reducing flow reversion if it's the right way round.

cant fit them into the head sadly.. Its tigh tthough, maybe with some filing .. then again, I dont know if that would hurt flow

I could 'Shorten' the rings to make them fit, that wouldn't make a big difference I think, as my inlet trackt narrows anyways... Don't know fure sure if this would hurt though (again) .

 

[Dusky]

Could I modify it by enlarging the ports a bit in situ?

Would use something like this, but don't know how it's called : 

[KernowCooper]

Your engine would eat all the grindings, not recommended the stud to manifold slots are usually plenty good enough for a fitment of the inlet, after all thats what your left with when the heads been worked on as Cpt MW and Matt mentioned above

[Dusky]

Or something like this? http://www.amazon.co...l/dp/B00553UNOU

[Dusky]

Your engine would eat all the grindings, not recommended the stud to manifold slots are usually plenty good enough for a fitment of the inlet, after all thats what your left with when the heads been worked on as Cpt MW and Matt mentioned above

But it doesn't have manifold to stud slots

 

Edited by Dusky, 20 June 2014 - 02:03 PM.

[The Matt]

It's got half a hole on each side of the flanges though. Offer it up to the head and see how little movement there is when it's fitted.

They normally line up pretty accurately

[Ethel]

If the rings won't fit the head, there may well be an edge that's going to be restrictive anyway. If it's only a small amount, file the rings on the outside.