pulley damages oil pump?
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whats the factory spec torque setting for the underdrive pulley bolt? my oil pump went causing engine damage broken cams,timing belt and bent valves ,nissan says the pulley was over tightend and caused the problem,the torque spec the gave me was 29/36tq.
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Originally posted by QUANSUNG
whats the factory spec torque setting for the underdrive pulley bolt? my oil pump went causing engine damage broken cams,timing belt and bent valves ,nissan says the pulley was over tightend and caused the problem,the torque spec the gave me was 29/36tq.
whats the factory spec torque setting for the underdrive pulley bolt? my oil pump went causing engine damage broken cams,timing belt and bent valves ,nissan says the pulley was over tightend and caused the problem,the torque spec the gave me was 29/36tq.
Guest
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Originally posted by My 4DSC
i thought your engine broke because you shifted into 2nd gear on accident at like 80mph or something?
i thought your engine broke because you shifted into 2nd gear on accident at like 80mph or something?
Senior Member
Joined: Nov 2000
Posts: 1,985
unorthadox says this is unrelated
but I would see why they would be biased. Seems honduhs had a similar problem. Check out this article on their page....
http://www.unorthodoxracing.com/faq.html
http://www.unorthodoxracing.com/faq.html
Joined: Sep 2000
Posts: 4,728
From: City of the Fallen Angel, CA
I suppose we could run a poll to find out, but perhaps it would be just as easy to ask the question here.
Has anyone besides QUANSUNG had an oil pump fail on their Maxima after installing an Unorthodox UDP?
Has anyone besides QUANSUNG had an oil pump fail on their Maxima after installing an Unorthodox UDP?
Not DAVEB the parts guy
Joined: Aug 2000
Posts: 8,549
They're screwing ya, buddy.
The 29-36 ft/lbs is correct, BUT you then torque the bolt another 60 degrees which means the bolt is torqueing down to 110-120 ft/lbs. The pulley bolt is HUGE and high grade. You don't specify a bolt like that unless you're torqueing it to well over 100 ft/lbs. Simply put, they're yankin' your chain. I get my information from Chiltons. When you installed the pulley, didn't you have a hell of a time getting the bolt loose? 29-36 ft/lbs would come off with little trouble.
Mared cams, bent valves, "kissed" pistons, blown oil pumps, and shattered clutches are all typical failures when you misshift. When you hit 2nd on a missed 2-4 shift at 80mph (I'm assuming you did this), would EASILY exceed 8000rpms which is WELL over spec on the valve springs, crank, pump, cams, tranny, etc. This is your problem...NOT the UDP.
Dave
The 29-36 ft/lbs is correct, BUT you then torque the bolt another 60 degrees which means the bolt is torqueing down to 110-120 ft/lbs. The pulley bolt is HUGE and high grade. You don't specify a bolt like that unless you're torqueing it to well over 100 ft/lbs. Simply put, they're yankin' your chain. I get my information from Chiltons. When you installed the pulley, didn't you have a hell of a time getting the bolt loose? 29-36 ft/lbs would come off with little trouble.
Mared cams, bent valves, "kissed" pistons, blown oil pumps, and shattered clutches are all typical failures when you misshift. When you hit 2nd on a missed 2-4 shift at 80mph (I'm assuming you did this), would EASILY exceed 8000rpms which is WELL over spec on the valve springs, crank, pump, cams, tranny, etc. This is your problem...NOT the UDP.
Dave
Senior Member
Joined: Mar 2001
Posts: 419
feel a little bit better.............
Originally posted by Dave B
They're screwing ya, buddy.
The 29-36 ft/lbs is correct, BUT you then torque the bolt another 60 degrees which means the bolt is torqueing down to 110-120 ft/lbs. The pulley bolt is HUGE and high grade. You don't specify a bolt like that unless you're torqueing it to well over 100 ft/lbs. Simply put, they're yankin' your chain. I get my information from Chiltons. When you installed the pulley, didn't you have a hell of a time getting the bolt loose? 29-36 ft/lbs would come off with little trouble.
Mared cams, bent valves, "kissed" pistons, blown oil pumps, and shattered clutches are all typical failures when you misshift. When you hit 2nd on a missed 2-4 shift at 80mph (I'm assuming you did this), would EASILY exceed 8000rpms which is WELL over spec on the valve springs, crank, pump, cams, tranny, etc. This is your problem...NOT the UDP.
Dave
They're screwing ya, buddy.
The 29-36 ft/lbs is correct, BUT you then torque the bolt another 60 degrees which means the bolt is torqueing down to 110-120 ft/lbs. The pulley bolt is HUGE and high grade. You don't specify a bolt like that unless you're torqueing it to well over 100 ft/lbs. Simply put, they're yankin' your chain. I get my information from Chiltons. When you installed the pulley, didn't you have a hell of a time getting the bolt loose? 29-36 ft/lbs would come off with little trouble.
Mared cams, bent valves, "kissed" pistons, blown oil pumps, and shattered clutches are all typical failures when you misshift. When you hit 2nd on a missed 2-4 shift at 80mph (I'm assuming you did this), would EASILY exceed 8000rpms which is WELL over spec on the valve springs, crank, pump, cams, tranny, etc. This is your problem...NOT the UDP.
Dave
Supporting Maxima.org Member
Joined: Nov 2000
Posts: 2,909
From: Reno, NV
Originally posted by Dave B
They're screwing ya, buddy.
The 29-36 ft/lbs is correct, BUT you then torque the bolt another 60 degrees which means the bolt is torqueing down to 110-120 ft/lbs. The pulley bolt is HUGE and high grade. You don't specify a bolt like that unless you're torqueing it to well over 100 ft/lbs. Simply put, they're yankin' your chain. I get my information from Chiltons. When you installed the pulley, didn't you have a hell of a time getting the bolt loose? 29-36 ft/lbs would come off with little trouble.
Mared cams, bent valves, "kissed" pistons, blown oil pumps, and shattered clutches are all typical failures when you misshift. When you hit 2nd on a missed 2-4 shift at 80mph (I'm assuming you did this), would EASILY exceed 8000rpms which is WELL over spec on the valve springs, crank, pump, cams, tranny, etc. This is your problem...NOT the UDP.
Dave
They're screwing ya, buddy.
The 29-36 ft/lbs is correct, BUT you then torque the bolt another 60 degrees which means the bolt is torqueing down to 110-120 ft/lbs. The pulley bolt is HUGE and high grade. You don't specify a bolt like that unless you're torqueing it to well over 100 ft/lbs. Simply put, they're yankin' your chain. I get my information from Chiltons. When you installed the pulley, didn't you have a hell of a time getting the bolt loose? 29-36 ft/lbs would come off with little trouble.
Mared cams, bent valves, "kissed" pistons, blown oil pumps, and shattered clutches are all typical failures when you misshift. When you hit 2nd on a missed 2-4 shift at 80mph (I'm assuming you did this), would EASILY exceed 8000rpms which is WELL over spec on the valve springs, crank, pump, cams, tranny, etc. This is your problem...NOT the UDP.
Dave
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