Rev II Y-pipe to exhaust on N/A
#2
Sharp Claws
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it should fit the RB front exhuast fine but RB is notorious for making exhaust only fit as their complete system. the mating flanges are not in the same location as the OEM exhaust. so if you're trying to bolt it up to something else you will probably need to move the flanges.
#4
Sharp Claws
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the hangars match with the OEM hangar positions, yes. the flange to mate with the cat will probably be too short since the RB pre-silencers are longer than the OE cat length so the cat to catback will likely be too short.
someone can correct me if i am wrong. most of the cars i worked on had complete RB systems so i just mentally noted the differences.
someone can correct me if i am wrong. most of the cars i worked on had complete RB systems so i just mentally noted the differences.
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Unfortunately I bought it a long time ago just the Y-pipe to exhaust without research so that's why I'm in the predicament I am in now. Would it be better to just have the Y-pipe cut and extended to fit or just have one fabbed up? Asking assuming you might have an idea cost wise for both. Thanks for your input.
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How much would it be to fabricate a new Y-pipe just out of curiosity? I'm thinking resale value of the RB + pipe for future wise or do RB exhausts not go for too much anymore?
#10
Top Down, Boost Up
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The y-pipe to main cat connection should not be in a different place from stock. I used an RB TII catback with stock precats/main cat on my car for awhile. The difference in flange placement comes into play when you want to use their presilencer with any non-RB downpipe or precats, etc... They are 3" longer than the main cat, but it's in the direction of the engine.
#12
Top Down, Boost Up
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Ah, I missed that bit. The Rev II version looks like it has some length problems if not used as a complete system.
RX7 1986-1992: Exhaust - Complete Systems: REV TII Exhaust System - 87-91 TURBO II -
Judging from the placement of the hangars on the pre-silencer, the Rev II y-pipe is quite a bit shorter on the "cat side". On the standard RB catbacks, the metal hangars for the rubber donuts are mounted on a plate that bolts up at the presilencer/main cat-to-y-pipe junction.
RX7 1986-1992: Exhaust - Complete Systems: REV TII Exhaust System - 87-91 TURBO II -
Judging from the placement of the hangars on the pre-silencer, the Rev II y-pipe is quite a bit shorter on the "cat side". On the standard RB catbacks, the metal hangars for the rubber donuts are mounted on a plate that bolts up at the presilencer/main cat-to-y-pipe junction.
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No.
Different size flanges, bolt and bolt holes won't line up.
Different length Y-pipe through exhaust cans than NA.
Now if you had a RB 2 1/2 inch y-pipe and can set up, would cat back line up perfectly.
The RevII was meant to be a complete system, not something you could shoehorn into an existing exhaust set up. That said, it has been done with the before mentioned fabrication. But I wouldn't recommend it.
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What reason would you not recommend having the RB Y-pipe fabbed? I'm considering just having a Y-pipe fabricated from scratch in 2 1/2 as well. Also isn't the RB exhaust can inlet piping different length as well from the Rev II so having the RB catback Y-pipe would not work as well?
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What reason would you not recommend having the RB Y-pipe fabbed? I'm considering just having a Y-pipe fabricated from scratch in 2 1/2 as well. Also isn't the RB exhaust can inlet piping different length as well from the Rev II so having the RB catback Y-pipe would not work as well?
Hope it all works out for you.
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