BigBike

i recently bought an 87 rx7 turbo II with 120,000 miles and everything is ok except theres no power and it studers on high rpm 1 2 3 gears and my boost gause only moves a little bit when i punched it but theres no power at all its real slow hope someone can help me with my problem..

AE Turbo

Sounds like clogged cats.

vaughnc

BigBike,

Were the engine compression test results good? Usually you pay a slight premium for a rebuilt - low engine miles rx-7 (with good compression) or buy a dirt cheap rx-7 and do the rebuilt yourself for cost savings.

If so, then I'd look at getting the 60K service (tuneup) and fuel injector cleanings.

When you say no power can you be a little more specific. Is it accross the entire RPM range?

-- vaughnc
1992 FC3S Turbo II

snoopster76

usually means low power and low boost. that's what happened with me along with turbo to manifold and manifold to motor exhuast leaks. check out the cats

BigBike

well its just lack of power on high rpms it studers too and first starting gear even a 4 cylinder will beat my car cause it slow on starting even if it picks up speed i went 100 mph but it took me awhile to get there my foot is on the floor and it seems like it dont want to pass 100 mph

rx7_turbo2

Clogged Cats is most likely your culprit. Yank the cats, pop in a downpipe and a presilencer/midpipe or a high flow cat.

BigBike

HOW MUCH DO U THINK THI IS GONNA COST ME?