Stock parts breaking due to too much HP - Post your experiences.
#1
Full Member
Thread Starter
Stock parts breaking due to too much HP - Post your experiences.
I would like this thread to become a place for FD owners to publicise their broken stock parts due to too much power so that other owners know for the future.
What parts are weak, and what parts are strong? What to replace and at what power?
>>Hi guys, my FD is goin 2 be making around the 300hp mark, busy building the motor now. I am at the stage where I need to decide what I am going to do clutch and flywheel wise, and whether to get aftermarket heavy duty clutch and light flywheel or not.
How much HP can the stock clutch take?
What other parts give in and at what HP?
PLEASE, ARGUMENTS ARE NOT TO LAST LONGER THAN 4 POSTS FROM EACH PARTY.
THANK YOU,
FROM THE PEOPLE SEEKING INFO, NOT ENTERTAINMENT
What parts are weak, and what parts are strong? What to replace and at what power?
>>Hi guys, my FD is goin 2 be making around the 300hp mark, busy building the motor now. I am at the stage where I need to decide what I am going to do clutch and flywheel wise, and whether to get aftermarket heavy duty clutch and light flywheel or not.
How much HP can the stock clutch take?
What other parts give in and at what HP?
PLEASE, ARGUMENTS ARE NOT TO LAST LONGER THAN 4 POSTS FROM EACH PARTY.
THANK YOU,
FROM THE PEOPLE SEEKING INFO, NOT ENTERTAINMENT
#2
Rotary Freak
iTrader: (21)
most people experience stock clutch failure around 260whp. I have 300whp with a stock clutch and its holding up...barely. It dosnet slip during WOT in any gear, but the feel isnt to nice. I do have 40K miles of my chassis, and 3K of those was with 300whp.
Honestly, nothing is really going to break, ur y-pipe my start leaking with more boost. And with more boost its not healthy to use the stock intercooler. Higher intake temps and raise the chance of detonation.
Honestly, nothing is really going to break, ur y-pipe my start leaking with more boost. And with more boost its not healthy to use the stock intercooler. Higher intake temps and raise the chance of detonation.
#4
Full Member
Thread Starter
Thanks for posting guys, i would like for this to become good reference for people upgrading motors, and are unaware of other weaknesses in the drivetrain, etc.
#7
Original Gangster/Rotary!
iTrader: (213)
A lot of drivetrain failures will happen when launching the car. If you don't launch (ie dragracing) then you dont have as much to worry about, but I do know of a few instances of stock torsen diffs breaking on hard 1-2 shifts with 400+ rwhp street cars.
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#8
Got Rotors?
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While doing some searching last night, i read that the clutch fork tends to fail with aggresive pressure plates. Now this is one of those things i never hear about but when it's brought up, everyone has broken them.
#9
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I've read a few times that the automatic tranny can only handle roughly 300-325rwhp,so if this is true,I will be adding my automatic transmission to this list very shortly.
#10
Glug Glug Glug Burp
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Agree with Rich. Lots of broken crap is due to hard launch/drag racing. These cars weren't exactly designed to do straight line racing. Not that they can't... you just have to tuffen them up a tad.
I've hit 3rd at WOT before and swore my rearend exploded... but it's still there somehow.
#13
The Man
Broke Powerplant frame at 325whp and drag radials 12.00 at 114mph
Broke Mazdaspeed PPF at 342whp and drag radials 12.01 at 115mph
Broke Pass. Side axle at 357whp and ET Streets
Broke Tranny output shaft at 357whp and ET streets 11.77 at 117mph
Broke 2nd Tranny output shaft at 357whp and ET Streets 11.81 at 119mph
Broke 3rd tranny output shaft at same as above.... Threw helmet to the timing lights(okay, well almost)
Sheared idler shaft(the shaft with gears formed on it) at road course same as above.
Bought Banzai tranny and quit drag racing! You'll break driveline parts quickly with proper launching and sticky tires.
Art
Broke Mazdaspeed PPF at 342whp and drag radials 12.01 at 115mph
Broke Pass. Side axle at 357whp and ET Streets
Broke Tranny output shaft at 357whp and ET streets 11.77 at 117mph
Broke 2nd Tranny output shaft at 357whp and ET Streets 11.81 at 119mph
Broke 3rd tranny output shaft at same as above.... Threw helmet to the timing lights(okay, well almost)
Sheared idler shaft(the shaft with gears formed on it) at road course same as above.
Bought Banzai tranny and quit drag racing! You'll break driveline parts quickly with proper launching and sticky tires.
Art
#14
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i sheared my stock diff. brace in half.
#16
Full Member
Thread Starter
So looks like over 350hp, and things need replacing to higher strength parts, and dropping the clutch at 6krpm with sticky M/T slicks isn't the best either.
How are drive shafts?
Another safety precaution - Street ported motor with good EFI and other bolt ons, where about should the rev limiter be set?
How are drive shafts?
Another safety precaution - Street ported motor with good EFI and other bolt ons, where about should the rev limiter be set?
#19
Full Member
Thread Starter
What is the stock limiter set at, 8,000rpm?
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