Hard to shift at high RPM

[elpiar]

Somehow my shift is quite notchy in my s13, it's just hard to get into gear. No noise, just felt a hard resistance.

It's worse in higher RPM than low RPM, i don't know whether this means it's more of a clutch problem than transmission. I have spec stage 3+ clutch, new master cyl, replaced slave cylinder with a good used one.transmission oil replaced with amsoil.

any thoughts? double clutching sometimes help a bit.

[eazye2000]

Sounds like your Synchros*? *sp

Anyone else got an idea?

[hai1206vn]

There's always some resistance, higher rev = more resistance

But if it grinds the clutch might be at the wrong height, so it doesn't disengage completely

more likely some worn synchro

[elpiar]

Thanks for the inputs.

THere is no grinding, just resistance.

If it is indeed my synchros, should I swap to another good used transmission?

[Chukidori]

If you rev match properly you dont need synchros.

[elpiar]

If you rev match properly you dont need synchros.

I understand, but that doesn't solve my problem. Our goal here is to know what's wrong. I'm not gonna revmatch and ignore the problem.

[dickie]

moved to tech