The semi-Comprehensive M60b40 into E30 swap Q&A

[Jean]

Oh, used! gotcha :) Yeah, those guys are local and I have purchased a few things there, but sometimes they ask WAY TOO MUCH for basic things there like it's made out of gold :/

They quoted me like $500 for a harness, $1500 for m60 and same for manual tranny..... OKAY

[mkcman17]

JGood, sign me up for one please. i'm tired of kicking around looking for one.

[JGood]

JGood, sign me up for one please. i'm tired of kicking around looking for one.

PM Sent.

Autopartswarehouse has the Sachs Sport clutch on clearance for $231 shipped, with discount code APW2012, it comes out to $208 shipped. Not sure if it will hold the power, but as I said earlier, guys run 300whp turbo setups on stock m52 clutches. I'll report back as soon as my car is running, but that won't be for a few months.

[mkcman17]

sweet! flywheel ordered. now it's REALLY decision time on the trans.

[CoreyZ]

Reposted:

http://www.turnzero.com/technical_resources.php?resource=gear_calculator

A 2.93 puts you at a 157.5 mph top speed in 5th with a ZF 310, assuming a 6500 rpm redline and 225/50/15s on there.

That'll put you at about 3k at 70mph.

A 3.15 gives you a 146.5 mph top speed, and jumps your cruising rpm ~200.

Using a 420G Getrag with its 0.83 6th gives you 2600rpm at 70mph, and 176.5 mph top speed with a 3.15

Pretty fun to mess with.

1------2------3-----4-----5------6---- R
4.32 - 2.54 - 1.62 - 1.23 - 1.00 - 0.83 - 3.75

^ Getrag 6 speed ratios. The ZF 5 speed ratios should be identical, just without the 6th gear.

I've posted here before as Mr Two, name change came about when our shop started sponsorship. Hopefully I'll start gathering parts in the next few months :)

[The Dark Side of Will]

A 4.0 could *EASILY* pull a 2.56 rear end with the 5 speed.

I think with 2.93, you'll never have any traction in first, and maybe not in 2nd either.

[bmwmech1]

I think with 2.93, you'll never have any traction in first, and maybe not in 2nd either.

I hope that's not the case, or else I'll have to find a 2.56 rear end... no way I'm looking for a tire shredder in 1st and 2nd...ugh...

Garey

[The Dark Side of Will]

The Getrag 260 has 3.82 first and an E30 has... 3.73 gears? (not sure... I know the iX manual cars have 3.91's) for an overall of 14.24.
With 160 ftlbs at the engine, that means 2280 ftlbs at the axle for a stock car.

The ZF has a 4.20 first. With a 2.93 rear for 12.3 overall.
With 300 ftlbs, that's 3690 ftlbs at the axle.
With the 2.54 second and 2.93 axle, 300 ftlbs at the engine gets you 2230 ftlbs at the axle.

IOW, the M60/ZF car will pull as hard in 2nd as the M20/260 car does in first.
I don't think the E30 body has a prayer of hooking up an M60 in first gear on street tires.

[bmwmech1]

I know, I was more being facetious than anything, but the math makes it pretty plain, doesn't it?

Garey

[The Dark Side of Will]

Lol... What do 400, 500 and 600 HP Supras have in common?






















12 second timeslips.

[JGood]

Is anyone actually using the e34 540i radiator with notched frame rails?

I'm really not liking some of the upper rad hose concoctions that I'm seeing with e36 radiators. Some people build a hose out of 2, 3, 4 different hoses, some people use metal pipes, etc... They are all tight fitting, look like crap, and would be a PITA to replace/repair.

Seems like notching the frame rails may be the proper thing to do when using the engine-mounted oil filter housing. Can anyone confirm that you can use the stock e34 rad hose with the stock e34 radiator, without interference to the oil filter housing?


I've already cut and welded half my car, so I'm really not concerned about a little notching... unless there is a specific reason NOT to do it?

[bmwmech1]

Is anyone actually using the e34 540i radiator with notched frame rails?

I'm really not liking some of the upper rad hose concoctions that I'm seeing with e36 radiators. Some people build a hose out of 2, 3, 4 different hoses, some people use metal pipes, etc... They are all tight fitting, look like crap, and would be a PITA to replace/repair.

Seems like notching the frame rails may be the proper thing to do when using the engine-mounted oil filter housing. Can anyone confirm that you can use the stock e34 rad hose with the stock e34 radiator, without interference to the oil filter housing?


I've already cut and welded half my car, so I'm really not concerned about a little notching... unless there is a specific reason NOT to do it?

I hear you... I don't think I ever bolted the filter housing to the motor in my radiator mock up, but if the hose fits in an E34 and you place the radiator close to the same spot in the E30, there should be no issue with it fitting. Plus, you could use the factory E34 shroud and fan, or sub the engine driven fan with an electric puller in the factory shroud. I have re-vamped my rad/shroud/fan setup in mine already and it wasn't even done yet, lol. Notching the frame is not a big deal for the rad and it guarantees the radiator will cool the motor. I think the Z3M rad is all you would need as well, but depends on the budget. I have a E34 V8 rad if you are in need of one...

Garey

[Jonsku]

Is anyone actually using the e34 540i radiator with notched frame rails?

I'm really not liking some of the upper rad hose concoctions that I'm seeing with e36 radiators. Some people build a hose out of 2, 3, 4 different hoses, some people use metal pipes, etc... They are all tight fitting, look like crap, and would be a PITA to replace/repair.

Seems like notching the frame rails may be the proper thing to do when using the engine-mounted oil filter housing. Can anyone confirm that you can use the stock e34 rad hose with the stock e34 radiator, without interference to the oil filter housing?


I've already cut and welded half my car, so I'm really not concerned about a little notching... unless there is a specific reason NOT to do it?

I hear you... I don't think I ever bolted the filter housing to the motor in my radiator mock up, but if the hose fits in an E34 and you place the radiator close to the same spot in the E30, there should be no issue with it fitting. Plus, you could use the factory E34 shroud and fan, or sub the engine driven fan with an electric puller in the factory shroud. I have re-vamped my rad/shroud/fan setup in mine already and it wasn't even done yet, lol. Notching the frame is not a big deal for the rad and it guarantees the radiator will cool the motor. I think the Z3M rad is all you would need as well, but depends on the budget. I have a E34 V8 rad if you are in need of one...

Garey

The oil filter housing will be on the way, anyway. The reason for that is, that the engine sits "too close" to the radiator (there won't be space for fan between rad & engine).


Here's picture of my friend's E30 V8 with E34 radiator;




I solved the problem with a custom radiator;




So there are many options :) In both cases original radiator hoses were used (along with couple of steel-bends)..

[JGood]

Well that sucks. you're right, there's not much room there at all :(

At least the angles are better with the e34 rad... you don't have a 90 degree bend to do within 3" or so like you do when the filter is directly behind the rad inlet.

[Jean]

sweet! flywheel ordered. now it's REALLY decision time on the trans.

What flywheel did you go with?