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help diagnosing engine (tearing down)


yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1062923 posted 04/17/12 08:56 PM     Remind Me!  Send Private Message   Edit Post      
Im tearing down this engine i got from the junkyard and almost had to fight this one dude for it because he wanted it so bad saying he new the owner and telling me the block is trashed because the oil pump failed and the rod started to knock...

This engine looks fresh like it was running for a couple months, the inside of the block looks like its coated in something, could it be thermal coating?

Also i took of rod caps and bearings and the look shiny/spotless so i reinstalled them and im going to take off the main caps and check those bearing but im preety sure there going to be good...

My question is, should i try to fire her up or put it p for sale as a runnibng motor? it looks to be a good engine, my plan was to rebuild but it looks so damn good....



~turbohair~

Posts: 797 | From: san diego california | Member Since: 10/13/10 | IP: (12.18.245.219) | Report this post to a Moderator

Noobsauce
Member
1865/2000


Galant VR-4 org Post #: 1062926 posted 04/17/12 09:04 PM     Remind Me!  Send Private Message   Edit Post      
Have someone that knows motors inspect it. No way we can tell you without a doubt it's a good motor.

Posts: 159 | From: Beaverton, Oregon | Member Since: 04/07/12 | IP: (98.232.240.83) | Report this post to a Moderator

5OF2k
Member ++
5/2000


Galant VR-4 org Post #: 1062928 posted 04/17/12 09:08 PM     Remind Me!  Send Private Message   Edit Post      
Kind of useless without pics, honestly. Esp considering how you described the cylinders, honestly has me curious. Ive built many, many motors, and never used or heard of any sort of cylinder coating besides Honda's FRP cylinders. Post some pics.

In all honesty though, if its a good motor, throw it in and build your current setup. Either way, it never hurts to have a backup/spares. As it is, i have 2 at the shop now....



1993 Talon TSI, FPgreen DD
1957 VW Beetle Sedan Deluxe
1997 Civic EX, B18c/5lug swapped
2002 Yamaha Fz-1
Looking for another GVR4, or 5/2000...PM!

Posts: 664 | From: colorado springs, colorado | Member Since: 03/28/12 | IP: (198.228.223.197) | Report this post to a Moderator

yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1063042 posted 04/18/12 02:44 PM     Remind Me!  Send Private Message   Edit Post      
Not the inside of the cylinders, the inside of the block, I'll try to get some pics up.

I can't have anyone onspect this motor because I'm the farthest as engine building knowledge goes..



~turbohair~

Posts: 797 | From: san diego california | Member Since: 10/13/10 | IP: (74.82.64.160) | Report this post to a Moderator

Street Surgeon
Professor Street Surgeon
501/1000


Galant VR-4 org Post #: 1063171 posted 04/19/12 10:59 AM     Remind Me!  Send Private Message   Edit Post      
Could be coated with glyptal, some people either polish/grind out the inside of their blocks to remove stress risers and promote oil return to the sump, and some just coat it with glyptal, aaaaand some do both. On older hotrod's with porous blocks it can help seal them up and could also "encapsulate" any casting sand that might be waiting to play with the bearings.

Personally I wouldn't use the stuff though, I'd be scared that it would eventually chip off and end up being pulled into/through the screen of the oil pickup.



Cory O.
'92 Mitsubishi Galant VR-4 501/1000
Heavily modified, barely driven, some assembly required.


Edited by Street Surgeon (04/19/12 11:06 AM)

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1063250 posted 04/19/12 05:20 PM     Remind Me!  Send Private Message   Edit Post      
If all rod bearings, and main bearings are clean, cylinders look clean, Is here anything else to consider? How Would I check the oil pump?

Disassemble and check if the gears are straight cut and see if there grinding into the case?



~turbohair~

Posts: 797 | From: san diego california | Member Since: 10/13/10 | IP: (74.82.64.144) | Report this post to a Moderator

5OF2k
Member ++
5/2000


Galant VR-4 org Post #: 1063260 posted 04/19/12 06:11 PM     Remind Me!  Send Private Message   Edit Post      
Thats one way to inspect it visually, but you can also refer to an engine manual for clearances of the gears to each other and the housings. Another way to do it would be by doing a running oil pressure test once its in the car.

That being said, with all of the bearings in good shape, it most likely has plenty of oil pressure. If the pump had failed, youd be able to tell by seeing scoring on the bearings and journals of the crankshaft.

Sounds like you should be just fine.



1993 Talon TSI, FPgreen DD
1957 VW Beetle Sedan Deluxe
1997 Civic EX, B18c/5lug swapped
2002 Yamaha Fz-1
Looking for another GVR4, or 5/2000...PM!

Posts: 664 | From: colorado springs, colorado | Member Since: 03/28/12 | IP: (75.71.211.236) | Report this post to a Moderator

yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1063265 posted 04/19/12 06:39 PM     Remind Me!  Send Private Message   Edit Post      
Only known thing wrong with this engine is the knock sensor is melted to shit, im hoping thats it.

Once i finish this build and put the fresh motor in my galant, il throw this motor in my GST to see if it runs..



~turbohair~

Posts: 797 | From: san diego california | Member Since: 10/13/10 | IP: (12.18.245.219) | Report this post to a Moderator

5OF2k
Member ++
5/2000


Galant VR-4 org Post #: 1063285 posted 04/19/12 08:14 PM     Remind Me!  Send Private Message   Edit Post      
Melted? Thats typically not good...to say the least.

Have a straight edge so you can check the block for warpage? It wouldve had to have been extremely hot to melt the sensor. Is it the complete longblock, or just the shortblock? Any signs of fire damage?



1993 Talon TSI, FPgreen DD
1957 VW Beetle Sedan Deluxe
1997 Civic EX, B18c/5lug swapped
2002 Yamaha Fz-1
Looking for another GVR4, or 5/2000...PM!

Posts: 664 | From: colorado springs, colorado | Member Since: 03/28/12 | IP: (75.71.211.236) | Report this post to a Moderator

brisvr4
Oceania Distict Enforcer for the Galant VR4 Mafia


Galant VR-4 org Post #: 1063297 posted 04/19/12 09:44 PM     Remind Me!  Send Private Message   Edit Post      
What you will be seeing on the knock sensor is just the goo running out. Its completely normal and happens when they get old.

I would also get someone else to look at it if I was you.
Better that than to rely on the Internet for someone's possible incorrect diagnosis.



Tim
1992 Auspec
11.37 @ 131.46 - E85 goodness and stock block!
Official Australian home of the Ugh decal!

Posts: 955 | From: brisbane australia | Member Since: 02/13/04 | IP: (120.146.167.103) | Report this post to a Moderator

yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1063300 posted 04/19/12 09:58 PM     Remind Me!  Send Private Message   Edit Post   
Ya just the goo melted out the back.



~turbohair~

Posts: 797 | From: san diego california | Member Since: 10/13/10 | IP: (74.82.64.160) | Report this post to a Moderator


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