How bad is it blown?
#1
Hopeless
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How bad is it blown?
My friend blew the engine in his S4 NA a couple days ago, he's considering re-build, but he wants to know if there anyway to tell how bad it's blown without ripping the whole thing apart. It runs..but barely. Huge knocking noise coming from the back of the engine. It won't hold idle, and won't rev past 3000. Don't ask me why he was trying to rev an obviously blown engine, but people do strange things when their car blows up.
#3
Boost in..Apex seals out.
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Well, your going to have to remove the exhaust manifold anyways to pull the engine..
If you remove the manifold, and take a mirror..you can look inside and check if it has apex seals intact or not. A compression test would do this more effectively, but eh, you can also do this to see if your rotors are junk.
If you remove the manifold, and take a mirror..you can look inside and check if it has apex seals intact or not. A compression test would do this more effectively, but eh, you can also do this to see if your rotors are junk.
#7
"Mellow Yellow"
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Sorry to thread hijack, but absolutely no compression on the back rotor: Possible damaged rotor ect? Just wondering if I should buy an engine or get this one rebuilt and I'm trying to weigh costs before I get committed to either one.
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#8
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Originally Posted by Zokus
Sorry to thread hijack, but absolutely no compression on the back rotor: Possible damaged rotor ect? Just wondering if I should buy an engine or get this one rebuilt and I'm trying to weigh costs before I get committed to either one.
#9
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Originally Posted by rotorforce
Just drive it around...Rexryder has at least 1 if not two blown apex seals on the rear rotor and he is still pulling 305whp on the dyno and racing it on the street.
#11
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Originally Posted by NMJ87T2
Yes, it is very possible that there is damage to the housing. You will not know to what extent until you tear it apart.
#12
I'm back Bishes
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Originally Posted by Zokus
Ha, sure buddy, whatever you want to tell yourself. I already pulled the motor and I didn't even have enough power to drive it home 3 km (there was a hill) or even onto the trailer. I just want to know if there might be a lot of damage, with there being no compression at all.
#16
Rotary Freak
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Originally Posted by rotorforce
LOL! I believe you man, but I just can't understand how a "blown" engine can pull numbers like that on a dyno??? I am baffled
My mods:
Microtech LT-8 tuned by me.
t04e 60 trim @ 18-20 PSI
V-mount intercooler setup
Full 3" RE AMEMIYA DUAL EXHAUST (one of 3 in the U.S. I know of)
OBX turbo manifold
HKS 40mm wastegate.
filter intake on turbo
chevy dual pass radiator
and other stuff I forgot.
Anyway I'm tearing apart the motor pretty soon to find out exactly what happened, and will be making a new thread in this section.
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