L322 M62 Rebuild.

Moron · Nov 11, 2018

wammers said:
BMW copied the Alusil blocks Porsche used on the 928 and didn't make a very good job of it.

Bore scoring on Porsche engines is a well known problem on past and present Porsche engines........its not been fixed

Henry_b · Nov 11, 2018

I will do a compression test after 500 miles to check internal condition,

Hopefully it won't fall apart but from what i'm reading above i won't be not holding my breath!

holidaychicken · Nov 11, 2018

I wouldn't be over concerned about not having all the cylinders fitted with liners, i think my only concern would be if you used the original rings designed for Alusil, but that may not be a problem.
The 4.4 engine i have that has 7 bad cylinders I would say the failure was down to poor maintenance and the oil ways being compromised.

Henry_b · Nov 11, 2018

holidaychicken said:
I wouldn't be over concerned about not having all the cylinders fitted with liners, i think my only concern would be if you used the original rings designed for Alusil, but that may not be a problem.
The 4.4 engine i have that has 7 bad cylinders I would say the failure was down to poor maintenance and the oil ways being compromised.

Yes i'm not too worried, but i'll keep my eye on it anyway!

I'll be dropping the oil and filter in a few days to check for bearing material, hopefully it won't eat itself alive.

TBH i wasn't too thrilled about re-using the bearings.

jamesmartin · Nov 11, 2018

as someone that has machined a lot of v8 blocks it would be a concern to me, as 6 bores now have the tension of the liners and 2 dont,its not unkown for wear to be caused by liner/bore distorting at higher temps,but im no expert with that block so the proof will be in the pudding,and it will be interesting to see how you get on

Henry_b · Nov 11, 2018

jamesmartin said:
as someone that has machined a lot of v8 blocks it would be a concern to me, as 6 bores now have the tension of the liners and 2 dont,its not unkown for wear to be caused by liner/bore distorting at higher temps,but im no expert with that block so the proof will be in the pudding,and it will be interesting to see how you get on

Yes the proof will be in the eating.

if it falls apart I will report back!

jamesmartin · Nov 11, 2018

Henry_b said:
Yes the proof will be in the eating.

if it falls apart I will report back!

and if its a success i hope

Henry_b · Nov 11, 2018

jamesmartin said:
and if its a success i hope

cheers JM hopefully she'll stay together!

holidaychicken · Nov 11, 2018

it will be interesting for sure, I have no experience other than the blocks in my garage that i am yet to tackle the machining of and so I will interested in the outcome and I have no idea about the fitting of steel liners other than what i have researched and those engines had the complete set changed probably for the reasons that JM has pointed out and the fact that because the bores are so close together the tops of the liners have flatted sides to butt up to the liner next to it.

Henry_b · Nov 12, 2018

Well i've heard her today, and she runs sweet!!

Apart from a sticking lifter.

We'll be pulling cam covers tomorrow.

We were suspect of two and sure enough we can hear 'em.

When you give her some wellie though, fookin 'ell the noise is to dye for.

I want one..

Wow they're comfy

Now i've caught the l322 bug..

Fook me.

Ah i can dream!!

biketeacherdave · Nov 12, 2018

Yep ain't they great !!!!

Henry_b · Nov 12, 2018

biketeacherdave said:
Yep ain't they great !!!!

i can understand why ya'll love 'em..

i'm converted.

I'll definitely be having one in the future, no doubt..

Hopefully an early 4.4

biketeacherdave · Nov 12, 2018

Get one LPG converted iv just done 180miles round town on £47 of lpg will be all motorway tomorrow so expecting 220ish from tonights fill up.

Henry_b · Nov 12, 2018

biketeacherdave said:
Get one LPG converted iv just done 180miles round town on £47 of lpg will be all motorway tomorrow so expecting 220ish from tonights fill up.

180mi isn't too bad..

I'll get one, i'm adamant

brianp38dse · Nov 12, 2018

Henry_b said:
180mi isn't too bad..

I'll get one, i'm adamant [/QUOTE

I didn't know this was you

Henry_b · Nov 12, 2018

Nah i don't look like that..............

Yet.

Henry_b · Nov 20, 2018

Ok..

Once she was running there was a pronounced tapping coming from the rear of the motor..

Pulled her apart..

Once she was apart it was apparent there wasn't any oil getting to to cam bearings/journals, luckily it was caught just in time and the journals were polished and re lubed..

This piece of steel sits on top of the cams, it is hollow and full of holes, it feeds the cam and journals oil.

After blowing a good 1/2 a litre of parts cleaner though it i managed to dislodge a good amount of varnish and sludge.

The tappets were ok apart form 2 which were totally dead, luckily there were some new ones available and they slotted right in!

Almost there..

I got the vanos and cam sprockets on and turned her over, now there is oil feeding to the cams.

yippie!!

This is quite an idiotic design on BMW's part..

If you were to neglect a few oil changes and have some sludge build up, and it found its way and blocked this rail then you're in the shyte!!

I'll get her together proper next week!

Henry_b · Nov 20, 2018

Also installed a new tensioner and this Vanos part was re-primed.

holidaychicken · Nov 20, 2018

I couldn’t believe oil got through that rail, I stripped mine down and took all the HVAs apart and even stripped down the non return valves, all 32 of them. There is a tiny hole in the cam bearing cap next to the stud that the rail bolts to and mine weren’t blocked but I’m surprised they weren’t .
Are the rails handed or biased which way around ? I makes mine up to go back in the same way but I don’t think I needed to.
I also checked the bearing clearances with plastigauge which were all fine

Henry_b · Nov 20, 2018

holidaychicken said:
I couldn’t believe oil got through that rail, I stripped mine down and took all the HVAs apart and even stripped down the non return valves, all 32 of them. There is a tiny hole in the cam bearing cap next to the stud that the rail bolts to and mine weren’t blocked but I’m surprised they weren’t .
Are the rails handed or biased which way around ? I makes mine up to go back in the same way but I don’t think I needed to.

Yes i pulled them apart aswell just neglected to clean those rails, that ultimately bit me, this is an interesting engine to say the least!

But its a BMW lump so what can ya expect!

L322 M62 Rebuild.

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