need opinion on rebuild
Thread Starter
Senior Member
Joined: Jul 2007
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From: fl
need opinion on rebuild
s5 na
ok so i rebuilt the engine 1500miles ago. all i replaced was apex seals,apex springs, oil control o-rings, and all four bearings. reused all other springs and seals. the engine had 135k on it when i tore it apart. wear on housings wasnt bad. engine was completely stock. anyways cold start is very acceptable but hot start sucks *****. 20 seconds to 35 seconds. just an estimate. it was improving greatly right up till 1200k miles than its just kinda flat lined out. do you guys think that by 2k it will be ok? or did i make a bad decision to reuse those housings? ill try and get some compression numbers.
ok so i rebuilt the engine 1500miles ago. all i replaced was apex seals,apex springs, oil control o-rings, and all four bearings. reused all other springs and seals. the engine had 135k on it when i tore it apart. wear on housings wasnt bad. engine was completely stock. anyways cold start is very acceptable but hot start sucks *****. 20 seconds to 35 seconds. just an estimate. it was improving greatly right up till 1200k miles than its just kinda flat lined out. do you guys think that by 2k it will be ok? or did i make a bad decision to reuse those housings? ill try and get some compression numbers.
Banned. I got OWNED!!!
Joined: Dec 2007
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From: usa
By 1500 miles, it pretty much is what it is. It might gain 5 more psi by 3 or 4k miles.
Run a bit of premix in the tank on top of the stock OMP, and see if that doesnt help. Also be sure your battery and starter are turning the engine fast enough, that your injectors are in good condition with a good spray pattern and no leaking, and that your sparkplugs are clean and recent.
s5 models should not really have a problem with flooding unless compression is really, really weak. 90 and below kinda weak. s4 models tend to flood much easier, even a 100psi motor can flood.
Run a bit of premix in the tank on top of the stock OMP, and see if that doesnt help. Also be sure your battery and starter are turning the engine fast enough, that your injectors are in good condition with a good spray pattern and no leaking, and that your sparkplugs are clean and recent.
s5 models should not really have a problem with flooding unless compression is really, really weak. 90 and below kinda weak. s4 models tend to flood much easier, even a 100psi motor can flood.
s5 na
ok so i rebuilt the engine 1500miles ago. all i replaced was apex seals,apex springs, oil control o-rings, and all four bearings. reused all other springs and seals. the engine had 135k on it when i tore it apart. wear on housings wasnt bad. engine was completely stock. anyways cold start is very acceptable but hot start sucks *****. 20 seconds to 35 seconds. just an estimate. it was improving greatly right up till 1200k miles than its just kinda flat lined out. do you guys think that by 2k it will be ok? or did i make a bad decision to reuse those housings? ill try and get some compression numbers.
ok so i rebuilt the engine 1500miles ago. all i replaced was apex seals,apex springs, oil control o-rings, and all four bearings. reused all other springs and seals. the engine had 135k on it when i tore it apart. wear on housings wasnt bad. engine was completely stock. anyways cold start is very acceptable but hot start sucks *****. 20 seconds to 35 seconds. just an estimate. it was improving greatly right up till 1200k miles than its just kinda flat lined out. do you guys think that by 2k it will be ok? or did i make a bad decision to reuse those housings? ill try and get some compression numbers.
not necessarily.... did you rebuild because the car overheated? In that case, then yea, bad move re-using the housings. However, if they were in spec still then plenty of people re-use the housings!
Thread Starter
Senior Member
Joined: Jul 2007
Posts: 306
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From: fl
crapperrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
75psi average on both front and rear
damn
damn
damn.
if i got newer housings would i need to replace the apex seals also? or could i use the ones i've got now? im sure i could but asking just to make sure.
75psi average on both front and rear
damn
damn
damn.
if i got newer housings would i need to replace the apex seals also? or could i use the ones i've got now? im sure i could but asking just to make sure.
Banned. I got OWNED!!!
Joined: Dec 2007
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From: usa
With this mileage, your flat seals have worn considerably into the grooves in your old housings. If you put those (now unflat) seals against new (flat) housings you will once again suffer poor sealing and weak compression. But, after a while of running it that way (1-2k miles) they will wear flat again and seal up very well.
Whereas if you get flat seals and flat housings, you will have instantaneous compression, almost perfect right off the bat. You can set the idle on such motors after half an hour and then you're done.
Whereas if you get flat seals and flat housings, you will have instantaneous compression, almost perfect right off the bat. You can set the idle on such motors after half an hour and then you're done.