99GTvert

I was beating my car a little bit last night. When downshifting from 5th to 4th, I noticed that if I tapped the gas a little to raise the RPMs (to try and rev match), the transmission grinded while going into 4th gear, but if I were to downshift without touching the gas pedal prior to putting it into 4th, it made no grinding noise at all.

I don't remember this happening when I first got the car (several years/miles ago). Is this a sign of regular wear on the T45?

I think the transmission oil is due for replacement (I think it's been over 15k-20k miles since the last). Could that also be it?

WhiteFoxGT

Eh, not so much fluid. Sounds to me more like worn out synchro/blocker rings.

I broke my old t45 3-4 shift fork... replaced it and put all new blocker rings in.. shifted a little better. My trans in my cobra now has 52k miles and will scrape 1-2 if shifted really fast, and sometimes just jumps outta gear. My guess would be synchro and or blocker ring wearing out

teej281

Doug I need a ride along with you again in that cobra. Lol when you took me for a spin holy hell!!! I can see why it shifts bad.

WhiteFoxGT

LOL

Lifting is for pussies. Yea my 1-2 doesnt take long and my trans reminds me every time. 2-3 is fine tho.. And this is all on a stock base with cut handle and some rubber taken out

Went 13.65@104 box stock with 2" drop lol

Moonshine

Are those times with DR's?

I have had the same thing happen, Evan. Maybe the RPM's are a bit too high.

I have missed third several times while bashing. Never ground second, and it has been shifted very firmly at times.

Normal day to day driving I really methodically shift the car. I often times double clutch. It times my shifts near perfect with the slow rev down due to bad IACV. Always make sure my clutch is FULLY depressed before leaving a gear, and FULLY depressed before entering a gear. As not fully depressing the clutch will ruin synchro's. I'm real scared about that.

WhiteFoxGT

Stock cobras with 245/45/17 street tires

WhiteFoxGT

If you keep shifting the hell outta your car after the trans scrapes...it will eventually do this lol

Moonshine

Sooo..your launch sucked but it made up for it with sheer speed! haha. I can't wait til it stops raining and I test my bitch out. I've never driven on a track before. WOHOO!

99GTvert

Yeah, sometimes my transmission 'scrapes' when I try to nail that 1-2 shift quickly as well. It does have ~83k miles on it.

Today when I drove it, it didn't always 'grind' when downshifting from 5th to 4th while rev-matching. It seemed consistent last night, though. Regardless of the frequency, its probably just a sign of **** being worn.

Thanks, whitefox.

WhiteFoxGT

If thats what you wanna call it lol



Dont expect anything other than failure your first time out bro. I've made 100s of passes down the strip and every other time is a learning experience. I know what I gotta do, its actually doing it that counts. That slip was from my first pass down the 1320 with this car... first pass is usually always my best pass