Blowing out Carbon Deposits

[onehot951]

I should have filmed that. after 2 or 3 rounds of 2nd gear going all the way up to 6k, i noticed something nice. now at the end of 3rd the rear wheels start to break lose and i have to switch to forth. im in northern virginia and like to drive the george washington parkway. i pulled onto it from a side road and realized there was a lincoln that was only supposed to have been going 45mph going approx 65 or so. i came off the clutch at 4500 rpm and the the porsche takes off like god himself just kicked it clean in to next week. never seen it take off like that from a dead stop. it doesnt seem to like me shifting at 3k like before. next time i do it i will post a video if you would like to see it

[moliver]

say what?

[Lawrence Coppari]

Do you have a LS transmission? Wonder if your clutch is slipping....

[onehot951]

no its not the limited slip tranny.

[Lawrence Coppari]

Reason why I wondered is that the engine produces maximum torque well below 6K so the wheel spin would occur before you got to the end of 3rd gear if that is what occurred. That was my reasoning.

[onehot951]

im shocked i sware i responded to this but i dont see it. i follow you about the torque curves, but every other 951 ive driven has not behave like this one. most have been noticibly slower, and around 6 months ago i raced a new corvette z06 and i couldnt pull away and he couldnt pass me. we pulled over afterwards and he was pissed asking me what i did to the car. i said nothing and explained the previous owner chipped the car and i installed an boost enhancer and that was it... then again ive had it for 7 years. i let a fellow 951 owner named ian drive it and he swore my wastegate was stuck closed. shortly after this BEAUTIFUL (this car was literally beautiful) black 951 caught fire and burned and i found myself at my porsche mechanic asking him to check my wastegate to make sure it wasnt stuck . if what everyone is saying i dont know any car that weights 2900lbs with 245 hp that can run evenly a new z06 from 20 to 120. so when i asked about hp numbers awhile ago and i was told when stage 2 chips and a lbe i may have 245 total i didnt get it. i shift gears because at the higher rpms the rear wheels start to slip in 2nd and 3rd. does that make sense for a semi stock 951. or has something been done that im not aware of? and btw i baught this 7 years ago with 52,000 original miles on it

love to hear your opinion

[C2951]

I think Lawrence has it right. Your clutch is probably slipping.

[onehot951]

if the clutch was slipping then it theory the tach would rise without the car increasing in speed. i did the 5th gear check where at 70 in 5th gear press it to the floor. car starts pulling and the tach slowly goes up. im not sure how a slipping clutch would be able to spin the rear tires at over 50mph at full boost while it is slipping itself.

[Loquat15]

stage 2 chips + shimmed wastegate = fun fun fun!

I've had fun keeping up with vettes and pulling away from 350z's... s2000's are pointless.... too slow.

Im not an idiot nor do i go past the speed limit (by too much anyways) and never in traffic.

An easy way to tell if your clutch is slipping is... by smell. Smells bad...

[onehot951]

slipping clutches and overheated brakes have a very distinctive odor. im not getting either.

[Loquat15]

im not sure why the whole "burning the clutch" thing came up to be honest.

But right on for a fast 944 turbo!!!

[onehot951]

honestly im not sure. if the clutch were slipping it would either "smell" or the tach would rise faster than the cars speed was increasing. i had a 280zx that did that. this isnt doing that. this chirps the wheels when it shifts through the first 3 gears. im not sure how a slipping clutch would be able to transfer that much into the ground to make a moving vehicle break the wheels loose for a sec

[Terrh]

well, if you stay in the throttle, and the rear starts going sideways, it's probably not the clutch slipping :P

really anyone that has felt both ought to be able to tell the difference, clutch slip = no fun, wheel slip = lots of fun.