North American Turbocoupe Organization



Timing belt
sbhjr44 Offline
Senior Member
#1
I changed the timing belt on my 87 since I was going to check the cam timing because it seemed to be dead at 4500 rpms. Well the cam timing was way off. Put on new belt and button it all up and went for a shake down drive and it ran like it finally got some balls. Then I look in the rear view mirror and saw smoke starting to bellow out of the rear. Got home removed the IC and the cold side looking into the boost outlet was coated with oil. Cleaned it out as best as possible and put the IC back on and it just smoked bad at idle and worst when I rev the motor and not sure but sounded like there might be noise from the IHI. Removed the belts to make sure none of them were making the noise and then restarted and the noise was still there. Removed the IC again and the cold side had more oil and when I looked down at the hot side it had oil leaking from the WG and from the elbow to down pipe area and when looking up at the WG there was oil slightly dripping from the pivot pin. My wife said I should have just left it alone. So now to do a IHI replacement. I am going with another IHI since I am going to give the 87 to my oldest son in Mn. (He talked me out of it). He has not had a car that run like these so I figured he should start with the IHI and then later he can upgrade to a T-3 or a hybrid.
Stinger dual3"exhaust from dp & cat to magnaflows w/2.5 outlets w/tailpipes.Homemade CAI w/boost at18psi.MM c/c plates and tubular lca/front coilovers with Koni red adjustables all around. Ported/BV head/A237 and bobslog w/a stinger fmic set-up waiting to go on.86 stang gt w/motor and T-5 from a 86 TC w/3"SS dualexhaust w/cc plates and lowered 1.5".With volvo ic installed.
Reply

turbot-bird Offline
Senior Member
#2
ya, sounds like its fried lol
88TC undergoing transformation
Amsoil Dealer
NATO Vendor
My site
My Pictures
Reply

Keith Nubel Offline
Posting Freak
#3
You gotta ask yourself why it just started to smoke? Why after the belt and not before?
1985 TC
Reply

sbhjr44 Offline
Senior Member
#4
Good question and one I have been thinking about and just do not have any answer for. I will just go with it was it's time and leave it at that.
Stinger dual3"exhaust from dp & cat to magnaflows w/2.5 outlets w/tailpipes.Homemade CAI w/boost at18psi.MM c/c plates and tubular lca/front coilovers with Koni red adjustables all around. Ported/BV head/A237 and bobslog w/a stinger fmic set-up waiting to go on.86 stang gt w/motor and T-5 from a 86 TC w/3"SS dualexhaust w/cc plates and lowered 1.5".With volvo ic installed.
Reply

turbot-bird Offline
Senior Member
#5
it might be because it got ran hard and just finally gave
88TC undergoing transformation
Amsoil Dealer
NATO Vendor
My site
My Pictures
Reply

sbhjr44 Offline
Senior Member
#6
It could be my friend it just could be.
Stinger dual3"exhaust from dp & cat to magnaflows w/2.5 outlets w/tailpipes.Homemade CAI w/boost at18psi.MM c/c plates and tubular lca/front coilovers with Koni red adjustables all around. Ported/BV head/A237 and bobslog w/a stinger fmic set-up waiting to go on.86 stang gt w/motor and T-5 from a 86 TC w/3"SS dualexhaust w/cc plates and lowered 1.5".With volvo ic installed.
Reply

Martin Offline
Senior Member
#7
Did ou notice an improved boost pressure after the new setup? Given that your timing was off, the car may not have been hitting full potential on the boost side, and the turbo seals settled in to the lower pressures and slow spool up. If the timing was retarded, the spool up would have been slower, and the air volume would have been easily consumed by the engine demand. IT would have shown as a low boost pressure. Now putting everything back to where it should be, the turbo is spooling up better, given proper timing and fuel burn, and that extra pressure the engine cannot quite consume has to go somewhere.
I have a Auto trans in mine, and upped the pressure a number of years back (and yes I know, it is not good for the tranny, (as I found out this past summer!) I have since dropped the pressure setting back to stock, and have noticed less oil consumption and leakage in general, which probably points to my less then perfect PCV. I have a feeling my IHI seals may just hang in there a bit longer now, as well!
Martin
Stock 87, no mods, Black with the grey interior.
Boost High, Fly Low
Reply

sbhjr44 Offline
Senior Member
#8
I keep the boost at 10psi on the 87 and run 15 to 18 on my 88. It boost faster and maybe that had something to do with it. We will really never know but you can bet I will take it apart and look at it. Not that I know what I will be looking for other than blown seals.
Stinger dual3"exhaust from dp & cat to magnaflows w/2.5 outlets w/tailpipes.Homemade CAI w/boost at18psi.MM c/c plates and tubular lca/front coilovers with Koni red adjustables all around. Ported/BV head/A237 and bobslog w/a stinger fmic set-up waiting to go on.86 stang gt w/motor and T-5 from a 86 TC w/3"SS dualexhaust w/cc plates and lowered 1.5".With volvo ic installed.
Reply





Users browsing this thread:
1 Guest(s)



Theme © iAndrew 2018 - Software MyBB