whats more common? wrist pin,rod,or bearing noise?

supraduper · 12-15-2008, 05:21 PM

no worries, like i said i wasnt sure what you were trying to say.... haha

GOD!!!! YOUR SUCH AN ASSHOLE!! j/k

well eventually i am either going to buy a new engine... or attempt to rebuild this one.... i like the idea of a 300 hp N/A. although, that might not be feasable as i know that the bmw inline 6 thats in the m roadsters has a 3.2 L engine with constantly variable valve timing and its pushing out 315 hp and 251 ft lb or torque... so i dont think 300 is a reasonable goal as i wouldnt be able to get the ideal valve timing (of course without losing power elsewhere)

i wanted to stay away from turbo, as i hear they often need servicing... any truth to this?>

CyFi6 · 12-15-2008, 05:55 PM

There is truth to that if you start out with a crappy, abused engine, and abuse it more. If you start with a well built fresh engine running decent boost you are not going to have problems. It is when people try to get big numbers and abuse the engine constantly that they get problems. Though i abuse the hell out of my NA even with this knocking sound and its still holding up.

kwnate · 12-18-2008, 03:44 AM

probably rod knock. Keep the oil full and keep an ear out for it getting worse. Don't want to destroy your block.

supraduper · 12-18-2008, 03:56 PM

yea, well i got an opinion from some of my toyota friends at the dealership and they all agreed its a rod knock... as evident by depressing the dashpot so that the throttle chokes out... then the sound was clear....

so my next question... im pretty familiar with rebuilding engines.... however i dont want to pull the engine... i was wondering, is it possible to do an in-chassis rebuild? just pull the timing belt, head, lower crossmember, and oil pan. is this possible?

i imagine the rod knock can be cured with new bearings??? is this correct?

Chambers · 12-18-2008, 04:39 PM

Well, there is a lot to do when it comes to dropping the cross member, I haven't done it but I have seen a write up on another forum about it. It would be much easer to pull the engine out unless your hell bent on doing it in car. As long as the crank and the connecting rod journals are ok, then new bearings will be good.

Good luck.

12-18-2008, 03:44 AM	#3
kwnate SP58GT Join Date: Jul 2005 Location: USA Posts: 633	probably rod knock. Keep the oil full and keep an ear out for it getting worse. Don't want to destroy your block. __________________ Nate

12-18-2008, 04:39 PM	#5
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	Well, there is a lot to do when it comes to dropping the cross member, I haven't done it but I have seen a write up on another forum about it. It would be much easer to pull the engine out unless your hell bent on doing it in car. As long as the crank and the connecting rod journals are ok, then new bearings will be good. Good luck. __________________ Whats in the garage, well.... in the yard. 1986.5 Toyota Supra - NA - 5 spd 1986 Ford Ranger Lowrider - 5 spd 1984 Ford Ranger XLT - 7" Lift - 4X4 - Auto "Stuck in the 80's"

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12-15-2008, 05:21 PM	#1
supraduper Stock Join Date: Dec 2008 Location: nh Posts: 14	no worries, like i said i wasnt sure what you were trying to say.... haha GOD!!!! YOUR SUCH AN ASSHOLE!! j/k well eventually i am either going to buy a new engine... or attempt to rebuild this one.... i like the idea of a 300 hp N/A. although, that might not be feasable as i know that the bmw inline 6 thats in the m roadsters has a 3.2 L engine with constantly variable valve timing and its pushing out 315 hp and 251 ft lb or torque... so i dont think 300 is a reasonable goal as i wouldnt be able to get the ideal valve timing (of course without losing power elsewhere) i wanted to stay away from turbo, as i hear they often need servicing... any truth to this?>

12-15-2008, 05:55 PM	#2
CyFi6 3" Exhaust Join Date: Oct 2007 Location: SLO Posts: 234	There is truth to that if you start out with a crappy, abused engine, and abuse it more. If you start with a well built fresh engine running decent boost you are not going to have problems. It is when people try to get big numbers and abuse the engine constantly that they get problems. Though i abuse the hell out of my NA even with this knocking sound and its still holding up.

12-18-2008, 03:56 PM	#4
supraduper Stock Join Date: Dec 2008 Location: nh Posts: 14	yea, well i got an opinion from some of my toyota friends at the dealership and they all agreed its a rod knock... as evident by depressing the dashpot so that the throttle chokes out... then the sound was clear.... so my next question... im pretty familiar with rebuilding engines.... however i dont want to pull the engine... i was wondering, is it possible to do an in-chassis rebuild? just pull the timing belt, head, lower crossmember, and oil pan. is this possible? i imagine the rod knock can be cured with new bearings??? is this correct?