MyE28.com

I have a 533i 1984, done with euro conversion + body kit bbs front and zender skirts and rear, have a 265 tranny in it. Will post picks soon.

I know the best thing is to engine rebuilt, but would rather put a later year used m30 3.5 liter in good condition.

So please help, I need suggestions on what would the best for
the e23 745i turbo set up.

Thanks

http://cgi.ebay.com/ebaymotors/ws/eBayI ... %26fvi%3D1

Looks like that's most of what you'll need. You'll have to change the exhaust studs to something that can be used on the 745 manifold. You'll need an oil supply and return for the turbo, an exhaust system and a way to regulate the ignition and fuel. That should be most of the parts you'll need before you can have fun.

Getting all the parts on the car is something else...

Thanks.
OK guys my friend told me today that is better to used a 3.3 or 3.4 motor for this set up seens the have less compression ratios than the 3.5, or the block from either one with a rebuilt head of a e23 745i turbo. Is he right?

belitwo wrote:Thanks.
OK guys my friend told me today that is better to used a 3.3 or 3.4 motor for this set up seens the have less compression ratios than the 3.5, or the block from either one with a rebuilt head of a e23 745i turbo. Is he right?

Short answer: No.

Just get the parts you have and and the ones you'll need along with some decent ign/fuel management on the motor that's in the car now and get it running. You'll have all the time in the world to change things after that.

Looks like you may be missing the plumbing for the oil cooler.

belitwo wrote:Thanks.
OK guys my friend told me today that is better to used a 3.3 or 3.4 motor for this set up seens the have less compression ratios than the 3.5, or the block from either one with a rebuilt head of a e23 745i turbo. Is he right?

Yor friend is correct. The 3.4 is a great motor for turbo. Probably better than a straight 3.5 for around town. Use a B34 block with B35 head for even more power.

Call TCD, tod can give great advice.

Nebraska_e28 wrote:Looks like you may be missing the plumbing for the oil cooler.

And the oil filter housing...

M635CSi wrote:

Nebraska_e28 wrote:Looks like you may be missing the plumbing for the oil cooler.

And the oil filter housing...

Drill/tap with 1/8 npt fitting. Good to go.

Mike-TurboE24 wrote:

belitwo wrote:Thanks.
OK guys my friend told me today that is better to used a 3.3 or 3.4 motor for this set up seens the have less compression ratios than the 3.5, or the block from either one with a rebuilt head of a e23 745i turbo. Is he right?

Yor friend is correct. The 3.4 is a great motor for turbo. Probably better than a straight 3.5 for around town. Use a B34 block with B35 head for even more power.

Call TCD, tod can give great advice.

It may be helpful for us to define what's meant by "better". belitwo picked up a deal from ebay to put a turbo from a 745 on his car. When everything is said and done, the power output of that engine isn't going to be limited by the engine but by the turbo and the engine management.

If this project was starting with a clean sheet of paper and maximum power was the goal, then an M88/S38 engine would be the best choice. It seems to me this project is being done to get a power boost on a tight budget and that's why the M30 engine and ebay turbo from the 745 are being used.

Given the apparent financial constraints and the limiting factors being the 745 turbo and 533 ign/fuel management, I don't see other engine options as "better".

If I were doing this project and had enough money after the ebay turbo then I'd spend it on a MegaSquirt for ignition and fuel management, getting the 745 low impedance injectors cleaned and flow tested and sending the turbo over to TCD for an exchange to their larger turbo.

Doing an engine swap at this point won't address the fuel and ignition issues that need to be resolved before this engine will run properly and it won't help with the small turbo but it will delay getting the car back on the road. The reason I say the "Short answer: No" to whether a different engine would be "better" is because I considered what appears to be the goal and so I do not, at this point, consider another engine to be a "better". That isn't to say I'm correct, but it is my reasoning.

Mike-TurboE24 wrote:

M635CSi wrote:

Nebraska_e28 wrote:Looks like you may be missing the plumbing for the oil cooler.

And the oil filter housing...

Drill/tap with 1/8 npt fitting. Good to go.

I think it's not that easy...

M635CSi wrote:

Mike-TurboE24 wrote:

M635CSi wrote:

Nebraska_e28 wrote:Looks like you may be missing the plumbing for the oil cooler.

And the oil filter housing...

Drill/tap with 1/8 npt fitting. Good to go.

I think it's not that easy...

I'd scavenge the local salvage yards for this to simplify things a bit.

M635CSi wrote:

Mike-TurboE24 wrote:

M635CSi wrote:

Nebraska_e28 wrote:Looks like you may be missing the plumbing for the oil cooler.

And the oil filter housing...

Drill/tap with 1/8 npt fitting. Good to go.

I think it's not that easy...

Please elaborate for the benefit of us all. What is not so easy? Is the kkk oil supply different than any other oil supply?

My TCD kit was that easy. Actually easier since mine was already set up from my old Callaway kit.

Mike-TurboE24 wrote:

M635CSi wrote:

Mike-TurboE24 wrote:

M635CSi wrote:

Nebraska_e28 wrote:Looks like you may be missing the plumbing for the oil cooler.

And the oil filter housing...

Drill/tap with 1/8 npt fitting. Good to go.

I think it's not that easy...

Please elaborate for the benefit of us all. What is not so easy? Is the kkk oil supply different than any other oil supply?

My TCD kit was that easy. Actually easier since mine was already set up from my old Callaway kit.

The operative term here is oil cooler so while the "oil supply" for the K27 is similar to other turbochargers, the BMW M102 and M106 engines have a unique oil filter housing which allow for oil cooler plumbing.

M635CSi wrote:

Mike-TurboE24 wrote:

M635CSi wrote:

Mike-TurboE24 wrote:

M635CSi wrote: And the oil filter housing...

Drill/tap with 1/8 npt fitting. Good to go.

I think it's not that easy...

Please elaborate for the benefit of us all. What is not so easy? Is the kkk oil supply different than any other oil supply?

My TCD kit was that easy. Actually easier since mine was already set up from my old Callaway kit.

The operative term here is oil cooler so while the "oil supply" for the K27 is similar to other turbochargers, the BMW M102 and M106 engines have a unique oil filter housing which allow for oil cooler plumbing.

I see how the e23 filter works. Why can't you tap a regular housing twice, in the spirit of a 745.

Or just don't worry about an oil cooler righ now. Easy enough to install later.

Not trying to be a pita, just thinking.

Probably the best thing to do is skip installing an oil cooler and get the turbo on and the car running.

The oil filter housing from the 745 has a different oil filter casting. The M102/M106 (745) oil filter housing allows a thermostat to regulate oil flow to the oil cooler. The M30 oil filter housing in US spec E28s and E24s have neither the thermostat provision nor enough metal to machine for one. Some US spec E24s and E28s and some euro spec E24s and E28s have the oil filter housing with provision for an oil cooler.

I was planning on bidding for that when i saw one at the yard. Turns out i slept a little too long on this or it would have been mine! haha get that thing on there for the rest of us with turbo dreams in our heads. I really wish i had the $$ jingle for the tcd, but so far my funds wont get me into anything but a scavenged 745 setup nowhere near as complete as yours. Good luck and like i said get that mother running and some good vids up so theres some good softcore material for the rest of us to look at.

Thanks for the replies guys. I can actually get the rest of parts from a local friend Ebayer who has about 3 745i set ups. He was the one who suggested the 3.3 or 3.4 block plus the 745i head, which he offered to sell to me. But he won't actually sell the complete set ups until he does his convertion on his 635.
Can you guys give a list of parts needed, and where can I get literaure plus pictures of the m30 convertion, and also I am going to do compression check on my motor, what would be good numbers?

And yes, I have been dreaming about this myself and still am until is finally complted.