i bought this car from friend and took the engine and put
it in my rx-7 and i think my car is slower then the other one and because he drove it and he said that it was not as fast and the only thing i did not use was the cpu and the clutch and now i put a 89-91 intake manifold and it is still not as fast, could it be the clutch beacuse it won't even burn rubber it 2nd and before it would and a lot and sometimes in 3rd on the other car and now it won't in 2nd or 3rd

 

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It could be the clutch. does it feel like its slipping? You could possibly have other problems like lines, hoses and such not connected properly.

Recheck everything on the engine to make sure it is done correctly.

Why you did not compare the clutches while you had them out? Did the clutch look worn or anything? Did you adjust the clutch after installing before driving?

A good once over of the car might reveal some problems you missed earlier.

 

the clutch on mine was almost new because the guy i bought the car from just had a new on put in and the other clutch i did not know how many miles it had on it so i did not put it in and how do you adjust the clutch the engine swap was done a couple of months ago but never really tried to see how fast it was until now

 

ahh so sounds like the car runs without problem, it is just not as fast as you remember the other car. If your clutch is grabbing at the place that is good for you then it is probably OK.

You can adjust the clutch pedal by lossening the 2 10mm bolts on the back of the pedal and turning the Rod going to the master cylinder. I can't remember which way to turn it to make it do what. It is hard to tell when upside down. Just adjust it one way and then drive it to see where is best. You don't want the clutch to grab at too low of a pedal postition and again not at too high of a postion either.

 

but right now it won't burn rubber when you sift to 2nd or 3rd but only 3rd sometimes and in 2nd alot but now it won't do it only in 1st

 

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You'd probably get more responses if you used sentences, your messages are just about impossible to understand.

Check timing. Are your 6 ports opening up? VDI if you have one? Compression on Front and rear rotors? New plugs/wires. Are you getting spark on all plugs? Any vacuum leaks?

Paul

 

i am going to see if i can use my friends timing light to check timing but the timing should still be the same because i did not do any thing to the timing.the 6 ports are opening and the vdi is not working yet.the plugs are ngk and almost new and the wires are msd 8.5 wires and almost new.and i don't think i have any vacuum leaks .

 

i boutght a car and i took the engine out and put it in my rx-7 and put the my old one back in the other one and sold it.now i have my friend drive mine and it is not as fast as his the one i took the engine out of but he bought from this guy because it would not pass smog so he bought it then i bought it but mine is not as fast as the other one.mine won't even burn rubber when you sift to 2nd gear before it use to in the other car and some times in 3rd gear but mine only does it in 1st

 

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could it be the clutch or computer because that's the only things i did not change and i put the my old clutch in because it was almost new and i did not know how many miles the other one had

 

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