datzenmike Posted April 28, 2019 Report Share Posted April 28, 2019 4 hours ago, frank88 said: Am I the only one that finds it odd that the intake is held on with two bolts on top and none underneath!? There are 4 bolts on the bottom side of the manifolds that pinch both the intake and exhaust to hold them on. You can see them in your picture. One on each side of the coolant holes for the intake.. 1 Quote Link to comment
frank88 Posted April 28, 2019 Author Report Share Posted April 28, 2019 8 hours ago, wayno said: My point was that the U67 exhaust manifold has a square port exhaust, but your W58 head is a round port exhaust, that exhaust manifold was never meant or made to be on the head, it will likely have exhaust leaks at the head/manifold area as either the head or the manifold don't match the gasket, I don't remember for sure which gasket should be used, but square port type gasket I think, I believe the round port gasket will leak the moment the engine is started. Cheers wayno. I'll crack on as normal and see what happens but will keep an eye out for another mani. Chances are slim though! Quote Link to comment
Stoffregen Motorsports Posted April 28, 2019 Report Share Posted April 28, 2019 Tapered plugs hold coolant pressure better. Also, a straight plug runs the risk of coming loose and falling into the head casting. Quote Link to comment
banzai510(hainz) Posted April 29, 2019 Report Share Posted April 29, 2019 I would think you need to plug the holes. when running side drafts as you don't ever have to worry about leaks. Quote Link to comment
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