Using non x5 M62TUB44 in my 4.4 X5

[90turbo1]

Originally Posted by Nick P

Judging from your approach "to replace instead of repair" - you seem to be an official BMW tech. (I'm joking)

It's obviously not a direct 100% fit - so you've started waisting your time right now, just by asking about it in forum.

If the valves are bent you just need to repalce the heads - there's nothing wrong with pistons for sure.

It would be also a very stupid idea just to throw in some used engine, without doing some preventive sanctions even on another 10 years old used engine with 65 k miles - otherwise there's a very real possibility the pistons and valves in the "new" engine will have another rendez-vouz soon, due to the common timing chain failure.

So the logical minimum even would be
- new rod bearings
- new chain (tensioners, rails)
- new valve seals
- new head gasket

Otherwise you've waisted the opportunity to do it once the engine's out.

P.S:
And you always see a cross hatching on cylinder walls of M62 with alusil coating - that is the most remarkable point if you have to distinguish between new identical nikasil and alusil blocks (not TU related, but the first non-vanos M62 had both - nikasil and alusil coatings)

Allright, yes I was wrong with the cross hatching, on the last one I had apart we did not see anything on cyl walls they were perfectly smooth.

yes when I get the new motor the guides and such will be changed. I just dont wana go through the hassle and down time of going through this engine with 216k that came to a complete stop while running.

the reason I am asking on this site is this is where the other posts about this have came from but there is no finish or the OP dissapears. I am assuming (yes I know what that means) that the swap either went well and they no longer needed help, or they just abandoned it and sold or gave car to salvage yard like so many happen up here.

[Nick P]

Originally Posted by 90turbo1

but.... I would like to chat with someone that has done this before. It seems that you can put a M5 motor in a x5, so that config seems to work. but no concrete evidence on this swap yet

You're funny - first you're talking that you won't mess with engine overhaul, but also toying with idea to swap the S62.

=> AWD oil pan
=> lubrication of 1450 psi double vanos untis
=> auto gearbox

There's several S62 swaps done on X5 but they're all RWD, not because of oil pan itself, but due to the lubrication system of S62. After the swap the cars were either converted back to stock (useless RWD X5, not really faster than "is" versions) or slaughtered.

[Nick P]

Originally Posted by 90turbo1

the reason I am asking on this site is this is where the other posts about this have came from but there is no finish or the OP dissapears. I am assuming (yes I know what that means) that the swap either went well and they no longer needed help, or they just abandoned it and sold or gave car to salvage yard like so many happen up here.

That's the reason, why I made my 6-speed conversion first, without asking anything in forums and than just posted the result.

[90turbo1]

Originally Posted by Nick P

You're funny - first you're talking that you won't mess with engine overhaul, but also toying with idea to swap the S62.

=> AWD oil pan
=> lubrication of 1450 psi double vanos untis
=> auto gearbox

There's several S62 swaps done on X5 but they're all RWD, not because of oil pan itself, but due to the lubrication system of S62. After the swap the cars were either converted back to stock (useless RWD X5, not really faster than "is" versions) or slaughtered.

no no no I did not say I want to swap in a S62, all I said was its been done. so in theory the block has the bosses to use the x5 motor mounts. thats all I was saying.

I am keeping this all M62 here. nothing more.

[Nick P]

Sorry for missunderstanding then.

[90turbo1]

Originally Posted by Nick P

Sorry for missunderstanding then.

no problem, I do appreciate this advise that all have given me, Its just a grey area and now kinda a challenge accepted kind of thing.

call me strange for wanting to do this and not rebuild the engine in the x5, I just feel this is a better alternative for me.

[90turbo1]

this is interesting,

the engine mounts to fix the m62/m62tu engine to the BMW engine stand (not aftermarket engine stand) are all the same, so that tells me that the holes are drilled and in the same location on all the blocks. as the engine stand used 6 mounting bolts on each side of block.

[90turbo1]

Well this one will remain a mystery.

I called to get that motor and they told me that the motor mount has been pulled out of the block so threads need repairing. well thought it was too good to be true.

so I bit the bullet and purchased a good 2002 4.4 x5 motor with 64k on it. paid a little more but no supprises with this one.

even came with 2 year warranty.

[Nick P]

Well, once there's several S62 fitted in to E53 (one of them was 5-speed manual and AWD - unfortunately main shaft bearing was broken after first drive and the car was slaughtered) it's not that big deal.

Nevertheless - I've purchased a brand new M62 non-X5 block for very good money, which will be installed on my 4.6is primary to the SC installation.The bore obviously remains 92 mm, which means 8 mm cylinder walls (4.6 - 6 mm, S62 with 4.9 - only 4 mm for comparison) I'll also get non-vanos M62 B44 with spun rod bearings and will put the heads on the new block. Further I will use used S62 crank and rods (with 89 mm stroke) and forged pistons for 9.0:1 compression. The non-vanos heads will be ported, I will also use forged rod bearings and standard crank bearings, 315 injectors, 0,7 bar pressure from not intercooled V3 SC. Other gaskets, tubes & other stuff like oil pump,fuel pump etc etc will be installed to bring the engine to new condition. The engine gets an oil catch tank and water/meth injection for hot days. The cams will be regrinded to put the power peak to about 6300-6400 rpm and the max revs will be 7000. I will also put the 200 cell metallmesh cats to produce some more back pressure in exhaust (for now catless). With Hartge headers, which are already installed, the power band and torque should be very smooth.

The engine gets tuned for non-vanos and MAF-less (a/n) operation on stock ECU.

With 92 mm bore and 89 mm stroke I'll get 4732 ccm eingine dispalcement instead of 4619 ccm on stock B46 engine and 8 mm cylinder walls.The compression reduction will bring another 100 ccm.

The old 4.6 will be compelted with non-awd oil pan from the donor M62B44 and sold on ebay.

So the mystery of using the non-X5 B44 block on X5 will be resolved in the comming spring, by God's help.

[Skyline]

>Nick
Instead of having to find a non Vanos motor with just bottom end damage, why not remove the Vanos from the M62 you already have? Or was the M62 a short block? There are adapter kits made just for this purpose designed for race motors.