I have tried a search on this,so don't rain down hard on me if this has been covered before.Over the weekend I am going to install a phenolic spacer between the the intake manifold(bbm type ef) and the cylinder head.My question is once the mating surfaces are all cleaned up etc can I reinstall this unit with no gasket either side of the spacer and just use the 3m/repco/ shalic type product which is an oil/fuel resistant brush on type sealant? In this application are manifold gaskets required and if so ,1 either side or just go with the shilac compound or something else?

if it were mine i would use a gasket either side.
if you were stuck you could probably get away with a petrol resistant sealant.. but gaskets would be a better option.



-mitch

Hi bigcookiebear,

We would recommend using a loctite 518 sealant for the job, which you can get from your local repco store for our spacers. No need to use gaskets with this item. If you have any more questions please don't hesitate to ask.

Kindest Regards,
Steve

I would suggest to use permatex (very good sealant especially made for intakes and good for petrol applications,dry's sticky),comes in a alittle white bottle with a red lid.You can get this from Repco or any motor accessories dealer.
But as mentioned before i would use 2 gaskets one for each side.But i am with with most others and wouldnt use the gasket cement just the plain gasket will do the job.

Last edited by KRUPTD on Wed Dec 10, 2008 6:56 am, edited 1 time in total.

i'm with mitch, i'd be using a pair of gaskets with no sealer at all. Not a fan of sealer on intake gaskets at all.

the other issue with sealants is you have to clean them off when you pull it apart next.. i hate cleaning sealant..



-mitch

Any good phenolic spacer should come with 2 gaskets, one either side.
Gasket maker will squeeze out into the intake and be drawn into the motor.