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First timer. Hawkeye blew up on way home


Owen369
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First time subaru owner. Went for a real nice hawkeye in blue sti wheels and spoiler on totally standard engine and body work is mint condition.full subaru history head gaskets/cam belt/ service done 4 thousand ago by subaru. Car was fine. Until half way home(60miles) then noticed it was very hot and she cut out. After long story i currently have the engine stripped and may be looking at 2 new heads and all the bits to go with them. Happy first subaru times 👍 

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Yes got £400 back at least its a start on the rebuilt bill. Car has only done 3-4 thousand miles in last 2 years. Water pump is fine and can not see any split pipes. Just so disheartening wanted one for ages buy one and blows up on way home gutted to say the least. 

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welcome. sorry to hear your problems.

 

and time for the bad news. budget minimum 3k for the rebuild. will need a full strip down and crank bearing replacement plus what ever else has been damaged. You need to get it to a specialist who can sort it properly. If it's not done right it will fail again and again and again.

If the garage you bought it from wont agree to pay the full cos of the engine build including crank bearings (based on being several thousand) then reject the car can get your money back, don't risk it cos you'll end out of pocket with a knackered car.

 

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I'll start by saying welcome to S.O.C and sorry to hear about the engine the 2.5engine bit known for going like that unfortunately but looks like you know how to twistle some spanners so should keep the costs down. :cool:

feel free to start a project thread to log your progress and keep us all up dated. I'm guessing taking it back now isn't an option with it being stripped. 

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Was a private sale but totally trusted the car as is mint an all history ect. Which is why i went for a nice one not a thrashed one. Yes luckly my family are handy with the spanners so no labour costs. Got to take heads to see if there ok today after work. As the cams have started to eat at the metal. (Can see on pic) to see if i need new heads. May start a build thread but just want to boostttt [emoji22]

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And no chap would not take car back same old story you have thrashed it on way home ect. But motoway is mostly 50mph anyway these days. If he would of had car back I would have never of brought another one really put me off hope is ok when its all back together

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Welcome aboard mate, I feel your pain, what's this about the cams eating into the heads ? Has it been run low on oil do you think ? I think tidgy is right, if your thinking of keeping this once fixed it really needs a full strip and check, also, how did you remove the avcs pulleys from the cams ?

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Once it's built again mate you will love it but I'll go with the others and being the 2.5 engine it's worth making sure everything is done and use good strong parts and it will last you out for many years all being well with some nice boost :driving:

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Have seen those heads will see what head place says today and maybe offer him 300 for both. Got pullys off using the bolt extractor method as it goes on outside of the bolts not !Removed! hex inside (gives more leverage) air gun would not touch them big bar and the handle off trolly jack. Whats this about the crank bearings then? Thats a engine split job? I believe the chap had the car serviced regular but who knows. Would like to track problem down as water pump and no split pipes

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Basically when the head gasket goes water gets into the cylinder. Cos it wont compress the bearings get pinched and damaged. They then have a nasty habbit of failing after 1000 miles. Which would mean another fulls trip down and rebuild doubling the cost. Given your 70% of the way there it would be daft not to. 

Mate found that out the hardway ;)

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yeah sorry :(

 

if your gonna be going that far then worth looking at uprated pistons, rods, headgasket and headstuds. will stop the same thign happening again and if you do it right will run 450bhp no problems

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O now we talking money i just want to drive the duckingg thing have read that if i put decat on when put back together that will bring light on and need remapping out. Subaru joys? Will see how heads get on at shop later and looks like i will be splitting the engine now aswell [emoji22]

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Bearings normally damaged if water in oil & been like it long time.
Would take hell of a lot of water in cylinder overload bearings due to hydraulics (water injection for example doesn't kill bearings) & you would bend rods too.
Do any cylinders show signs of water ingress ( look nice & clean)

As situation unknown and seller obviously sold knowing had issues & been too tight nip it in bud it needs strip down & full check,
Rebuild with new waterpump cambelt etc, oilpump seals and shells if needed, check pistons well & bore spec too .

If rest of car A1 then probably will work out good in long run, more an issue with seller really, subaru boxers are pretty solid for ragging they get .

 

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Top man mr b thank you for advise. Going to spilt the block check all that down below as engine is out be silly not to being i dont trust the engine at all now. Having a hard time finding some decent heads for it as mine are scrap

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17 minutes ago, Owen369 said:

Top man mr b thank you for advise. Going to spilt the block check all that down below as engine is out be silly not to being i dont trust the engine at all now. Having a hard time finding some decent heads for it as mine are scrap

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are the castings ok? can they be machined?

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Bin told that can not machine them as its a high performance head. Has took good chuncks out of cam lobes. So if take metal away ie clean them up. be no oil pressure around the cam as tolerance will be to big

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You can do 2 things with score marks in cap & head bearing wells.

1. if not deep can be polished out .

2. if deep, head cap face is machined down a fraction making hole fraction smaller & then it line bored & polished .

Lot of machine-shops will say can't be done but it because they can't do it, not got the kit or experience.

You need a proper machine-shop do this work and fussy one too (not many PROPER ones about)
If cams scored get new .
Have done this on couple builds we done & finish & spec spot on but does need expert & fussy machinist for proper worthy end result .

Cam journal load is minimal compared to say crank so it easier rework & tolerances although important have more scope .

With cams like that I think you will need crank bearings for sure, we can normally judge by pre strip oil pressure, stethoscope check, oil condition, head gasket leak internal/external & condition of bores/head & cam journals how good bottom end going be ...

 

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