MyE28.com

So, I had the M5 sold pending the results of a leak down test. Results were dissappointing (25% leakdown in two cylinders) so the deal fell through.

This left me with the easy decision to build the M5. It's easily the nicest e28 I have ever owned.

Beau stepped up and agreed to buy the red 535is. I am looking forward to this project.

Todd

Good for you, Todd. You going to build and M30 or the S38? I say shelf the S38 and G280 and rebuild it at your leisure, and throw in an M30. Just keep the other ///M bits intact and when you go to sell it, you'll have a choice of engines for the next owner!

-tammer

Todd will probably sell the s38 as a core and sell off the 280 and wiring harness as well. I think his plan was a built automatic m30 turbo car with M5 finery. It's in the M5 forum somewhere IIRC.

Should be a very nice ride when it's done.

Jeremy

Hmmm... I wonder if there's anything I can do to help....

Results were dissappointing (25% leakdown in two cylinders)

Todd,

didn't you mention that this particular M5 spent mucho time as a garage queen before being put back on the road ??

Your discovery of poor leakdown is very similar to what I found when I tested my Euro M5 engine after I got it running. I had two cylinders with high leakdown (>25%) and one that was marginal (>15%) before the timing chain did it's little trick. When I pulled the head hoping to only do a topend overhaul I found the cause of the leakdown numbers, cylinder corrosion. According to the PO, my M5 had spent 10 years in a collection and was driven 100-200 miles in that time period. My theory is corrosion (rust) got started in the cylinders which had open valves and pitted the cylinder walls. The pitting wasn't bad enough to have an impact on the compression test I did when I was looking at the car. But a leakdown found it later on. It was obvious when I pulled the head.

Low mileage garage queens are not always the best to purchase, particularly if they are not properly prepped. Duke's method of pickling an engine for long term storage is probably the best way to go. Park the car, disconnect the battery, pull the sparkplugs. Drain the oil and remove the oil filter. Install a new oil filter, fill the crankcase and the cylinders with light engine oil. Reinstall the plugs and oil fill cap. Place placards in the car to remind you at a later date the engine is pickled.

I'm looking forward to seeing how your new ride turns out.

Rich

Maybe this will answer some question about what motor is getting built?

You are going to kill yourself. That is all.

That should be fun. I read about some guys in Europe getting insane HP from turbo M88/3 engines. Over 1000 HP is obtainable.

Rich

Skeen wrote:You are going to kill yourself. That is all.

As long as there's video, it'll be worth it.

Rich Euro M5 wrote:That should be fun. I read about some guys in Europe getting insane HP from turbo M88/3 engines. Over 1000 HP is obtainable.

Rich

I am going to keep it reasonable and not run more than 1 bar.
Todd

T_C_D wrote:

Rich Euro M5 wrote:That should be fun. I read about some guys in Europe getting insane HP from turbo M88/3 engines. Over 1000 HP is obtainable.

Rich

I am going to keep it reasonable and not run more than 1 bar.
Todd

You and "reasonable" don't stay together too long usually. You going to source a South African 745i 4HP22 to go along with that?

Jeremy

T_C_D wrote:I am going to keep it reasonable and not run more than 1 bar.
Todd

Yea.....right.

At one bar, I am willing to put monery on you being close to 800 crank HP.

Ken is now well over that. I know you will not put that kind of money in the engine though.

All I have to say is.................................Aquamist and stand alone ECU. Safety + lots more HP

See.....I knew this would happen when you saw that my car was going to end up smoking yours...............raise the bar huh,...........we'll just have to see about that

Rich Euro M5 wrote:

Results were dissappointing (25% leakdown in two cylinders)

Todd,

didn't you mention that this particular M5 spent mucho time as a garage queen before being put back on the road ??

Your discovery of poor leakdown is very similar to what I found when I tested my Euro M5 engine after I got it running. I had two cylinders with high leakdown (>25%) and one that was marginal (>15%) before the timing chain did it's little trick. When I pulled the head hoping to only do a topend overhaul I found the cause of the leakdown numbers, cylinder corrosion. According to the PO, my M5 had spent 10 years in a collection and was driven 100-200 miles in that time period. My theory is corrosion (rust) got started in the cylinders which had open valves and pitted the cylinder walls. The pitting wasn't bad enough to have an impact on the compression test I did when I was looking at the car. But a leakdown found it later on. It was obvious when I pulled the head.

Low mileage garage queens are not always the best to purchase, particularly if they are not properly prepped. Duke's method of pickling an engine for long term storage is probably the best way to go. Park the car, disconnect the battery, pull the sparkplugs. Drain the oil and remove the oil filter. Install a new oil filter, fill the crankcase and the cylinders with light engine oil. Reinstall the plugs and oil fill cap. Place placards in the car to remind you at a later date the engine is pickled.

I'm looking forward to seeing how your new ride turns out.

Rich

A hot rodder once told me to put an engine on ice, pour ATF in it until it stops running and put it in a dry place.

I'm not saying I would do that, but that's what he told me.

Duke M535ti wrote:

T_C_D wrote:I am going to keep it reasonable and not run more than 1 bar.
Todd

Yea.....right.

At one bar, I am willing to put monery on you being close to 800 crank HP.

Ken is now well over that. I know you will not put that kind of money in the engine though.

All I have to say is.................................Aquamist and stand alone ECU. Safety + lots more HP

See.....I knew this would happen when you saw that my car was going to end up smoking yours...............raise the bar huh,...........we'll just have to see about that

Duke,

My current car has never seen more than 14.7psi. I am quite happy with it and to be honest not extremely excited about building another car!

I would much prefer the M5 had a good engine and was on its way to the new owner. Sadly it doesn't and is quite worthless with a crap engine. I could part it out for 13/14k but I won't even do that.

I actually really enjoy the red car and its current power level. It almost the perfect setup in my mind.

That said the M5 is a much nicer car and will certainly be a much stronger performer. I do not have any aspirations to produce the most HP. My goals have always been related to the 1/4 mile. I suspect that the M5 will go in the 10s quite easily.

Todd


Todd

Jeremy wrote:
You and "reasonable" don't stay together too long usually. You going to source a South African 745i 4HP22 to go along with that?

Jeremy

I am a changed man.

I already have the built 4hp22 and 3200rpm stall converter. They will go in the M5 with the new motor.

Todd

T_C_D wrote: I do not have any aspirations to produce the most HP. My goals have always been related to the 1/4 mile.
Todd

Oxy-moron my good friend. The more HP, the faster the 1/4.

I will eventually get a dyno number of 600 hp but will not be using that on the street. You should easily be 200 HP over that due to the CFM that a 4 valve head can move. My 600 will not move my car down the 1/4 mile faster than your +200 HP will (unless you suck at driving ) even though your US M5 will be heavier.

5er Fest 07, 1/4 mile, you and me......side by side. Should be fun.

Duke M535ti wrote:
5er Fest 07, 1/4 mile, you and me......side by side. Should be fun.

Duke,

I will set a time with my red car and it's 212k mile motor at 14.7psi that you will never eclipse.

Todd

T_C_D wrote:
Duke,
I will set a time with my red car and it's 212k mile motor at 14.7psi that you will never eclipse.
Todd

How, you just sold it? Gonna risk blowing it up after the sale?

Bring it................its only money

Still does not exclude you and me a 5er Fest. Watsamatter, afraid of blowing the $$$$$$ S38

This should be cool...

I'm not gonna say any names here, but someone's talkin' a lot of shit for not having a car that runs...

Skeen wrote:I'm not gonna say any names here, but someone's talkin' a lot of shit for not having a car that runs...

THAT would be both of us.

Duke M535ti wrote:

T_C_D wrote:
Duke,
I will set a time with my red car and it's 212k mile motor at 14.7psi that you will never eclipse.
Todd

How, you just sold it? Gonna risk blowing it up after the sale?

Bring it................its only money

Still does not exclude you and me a 5er Fest. Watsamatter, afraid of blowing the $$$$$$ S38

Its ON

RussC

Sounds really cool...hope ya get the numbers you want..

[quote="Rich Euro M5"
Todd,

didn't you mention that this particular M5 spent mucho time as a garage queen before being put back on the road ??


Rich[/quote]

I found the receipt for the service whent he car was put on the road in 1996. No Leak Down but the a compression test was done.

200
210
210
190
205
220

compared to Tuesdays test

180 8%
155 10%
165 25%
155 30%
155 15%
180 12%

Guess the damage was done during the 114k since the first test.

No matter, I dropped off my spare s38 at the engine builder last night.

Todd

I already have the built 4hp22 and 3200rpm stall converter. They will go in the M5 with the new motor.

Pardon the interjection

Is this trans. specific to a South African 745? If so, is it a beefier unit than US 7's have?

Reason I ask is I may pick up an 86' L7 and have delusions of turbo'ing the piss out of it. I assumed I'd swap a 5-speed into it but had no idea that BMW auto's could handle this much power.