I recently got a H22 with LSD swap into my 95 EG. Apparently, everything was working great except for a grinding problem whenever I up-shifted into 3rd Gear. The place that I got the engine from covered the problem, took the car/engine in and replaced the syncro set with a brand new one from Honda. Now everything is okay with regards to shifting, except that when I decelarate I get a loud hissing and rumbling sound that's seems to be coming from the tranny(the loud noise appears to be more noticable only when I'm decelarating while at 3rd gear or 4th gear). BTW...the guy that tore apart the tranny to put in the new synro set also put in a brand new flywheel(fidanza), pressure plate(ACT) and clutch(Exedy) for me. Could any of these combinations cause the noise that I'm getting?
Appreciate any and all help.

Thank You,

Darwin

 

so i take it your clutch and everything is brand new.

Have you had the proper break in time ? Its possible your clutch hasnt been broken in it, and is just giving off some settling noises. id say wait till after they are broken it, and if it persists have it looked at.

 

Yes flywheel, clutch, pressure plate, throw out bearing are all new.

Also, that's what I assumed at first, but as of right now, I've over 600 or 700 miles on the car since the synchros and above have been replaced, but I still get a good deal of noise coming from the tranny. Should I give it up to a 1000 miles?

Thanks for the advise,

Darwin