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Showing results for tags 'gtx4202r manifold high-mount rb26/30'.
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Need advice on choosing manifold - rb26/30 single turbo GTX4202R Hi all I'm currently in the process of dummying up the fitment of my garrett GTX4202R on my rb26/30 and of course running into some fitment issues. 1) First issue is the clearance between the turbo and the block - the compressor housing fouls against the rocker cover by maybe 1-2 mm. Might be able to either relieve the rocker cover or offset grind the cylinder head flange by 1mm or so to angle it out slightly. EDIT: or does anyone make an exhaust manifold insulator/spacer? even 3-5 mm would probably do it. 2) second issue is more difficult. the manifold seems to sit the (admittedly huge) turbo too high in the bay to shut the bonnet. This is probably not assisted by the fact that I already have an extra 38mm of deck height due to running the rb30 block. But it's so close I won't really know until I dummy it up. It's a nicely designed mx motorsports steampipe manifold with a nice collector and having done some measurements with a spare block, it's going to be a game of millimeters. But just want to know if there are any manifolds which sit the turbo nice and low in the engine bay, while still clearing the a/c - I would prefer to just buy something ready made and minimise the amount of screwing around if possible, in the event it comes to having to buy a new manifold. any suggestions gratefully appreciated. Oh, needs to be twin-scroll T4 flange, and if possible twin 38mm v-band gates. Or, custom. Some that I've seen also angle the turbo out sightly so the intake is looking more to the passenger-side headlight. Cheers Andrew