Technical > Engine and Transmission

G40 engine rebuild ?

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PeteDG2:
Advice needed please, plenty of it!

PeteG40 recommended I post my dilemma, to tap into this valuable resource called Club G40...


So, I replicate my quandary as follows;

"I'm no mechanic, nor engine-knowledgeable, just a long time owner who loves his car.

Brief details of my issue;

1. on local journey, climbing a short hill, accelerated to clear what seemed to be a bit of coking build-up
2. engine 'blew' and began burning oil as was evident from rear view mirror
3. was able to keep going a mile until pulled up on destination car park
4. opened bonnet to find oil everywhere, as if all seals burst
5. was able to drive the 9 miles home
6. was able to drive car 16 miles to garage at no more than 40 mph for assessment/diagnosis
7. trusted mechanic determined engine rebuild needed - probably s/charger too as had a slow oil leak it appeared
8. agreement for 'when-poss' engine rebuild by VW mad mechanic not eventually possible
9. car currently sitting at garage waiting for me to bring home and do whatever....

I was probably in vain, hoping to find someone who was qualified to rebuild the engine, maybe gradually, which would suit my budget!
I'd agreed with my trusted mechanic for him to take the engine apart and hopefully rebuild, unless he found an issue which would make a rebuild impracticable i.e. cost. He couldn't find the time, which is what I suspected after a while. That's why the car is still at his garage.

The costs involved, even if I find a reputable someone, would probably determine repairs impracticable (if not prohibitive!) but I don't know... for sure.

My options seem to be;

1. find 'a someone' reputable, able and willing and pay...whatever
2. sell the car as a project

The car had been running really well, though the s/charger should have been serviced about 10K+ miles ago! I live near Dumfries, Scotland and had the charger serviced by Jabba at the 'correct' time, when I lived in the Midlands. Being so distant from Jabba and poor finances, meant I was always putting it off. I think it has now done about 135K miles. Some bodywork repairs are going to be needed eg, rusting through adjacent to the fuel cap flap. I had the BBS re-done about 18 mths ago, have always kept it serviced, had lots of new parts, bought bodywork spares/replacements, have all the receipts ..somewhere! My car has always been a daily-user.

I do wonder whether it's the s/charger that's blown a seal, as I was able to still drive the car but clearly without any power from the engine, just a steady pace.

Do you know anyone who does such rebuilds I could discuss the car with and if I decide to sell, where would you advise I advertise it? (on here of course, eBay probably). The car would need to be collected by trailer I suspect.

Any advice etc you can give is very much welcomed.

I at least need to get the car home."



PeteG40 says: "To be honest it sounds just like you have a blocked engine breather, and that this is pressurising the crankcase, and that is making is spew oil out everywhere (perhaps also it may have blown the seals in the charger too). However g40s are also known for melting pistons - which it could be. Hard to say without knowing more."


Since putting this to PeteG40, I've submitted an enquiry with Bedrockretrodubs, Motherwell re engine rebuild and awaiting response.

Many thanks indeed,
Pete

Martyng40:
Alright buddy I’m a dg2 man as well with a non running G
Who was your mechanic and I might be able to help..

samg40:
Did your mechanic actually do anything whilst he had it then? To me taking the charger off is the first thing to see if it just that. I've had a blocked breather before a couple of times and the oil goes everywhere. I was lucky and didnt damage anything at all on two occasions and everything was fine after clearing the blockage.

Does it run ok or is it coughing/spluttering when running, is it down on power?

Yoof:
Compression check & report back  :)

Also photograph the plugs and post some photos.

Did it blow the dipstick out the tube?

ereeiz:
You can always pull the engine out and the charger, stick it on a pallet and post it down here to someone that would do it. I just went back to work a month ago or I'd have done it for you, spent the prior 6 months off floating about looking for stuff like this to do.

I have a friend that's built a couple of his own who may be interested in the "slowly, to suit my budget rebuild". I can ask him if he'd be interested? He's by me in Pershore, Worcestershire.


If it still runs, can you get a video? Crank the settings up as high as possible too so it's easy to see / hear everything.

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