M62B44 Swap into 1971 E3?

[smalcol]

Hey All,
Just joined this forum, don't have an E30, but I am doing a M62B44 non-vanos V8 swap on my 1971 E3 and you all are the experts. You all are doing some great work here, very impressive, I've learned a lot reading through your builds. I've got the motor mounted and am working on brakes and exhaust now.

For brakes, I have the E34 stuff and have been planning to use that design, with my original master cylinder. I see there are some here who have used tilton/wildwood manual pedal sets. I looked into this early in my project and emailed the fellow who owns Massive, Lee. He recommended to not use manual brakes for a street car.

That's what I'm concerned with, how much pedal effort is this going to require? For those that have done manual brakes, is it OK for a daily driver? Be honest.

The other complication is that the brakes on the E3 are quite a bit different than the E30, which may make a comparison invalid. There are 4 piston fixed calipers on the front and two on the rear of the E3.

Thanks,
Seth

[smalcol]

And a picture

Still looking for experience with manual brakes, but here's a picture of the motor in the car.

[JGood]

I can't really provide any first hand experience, but that is an awesome project. Keep us updated with how it goes!

[smalcol]

Thread

Thanks for the interest. Not too many people modify the E3, so there isn't much experience with brake conversions, etc. Most are putting newer M30's in and using a Tii booster with stock master to clear the B35 intake manifold. There isn't room for any booster with the V8, as in the E30. The steering box makes this much harder than the E30 swap unfortunately, I'm also at a decision point there.... Stick with the stock steering or try to retrofit a rack.

I have a small thread going over on the GRM forum with more pictures of my project if you're interested.

http://grassrootsmotorsports.com/forum/build-projects-and-project-cars/bmw-e3-bavaria-m62-swap/61748/page1/

[oliver.r]

radddd

[atmobenzin]

I did drive my e30 with manual brakes for quite some time. Brake system was otherwise stock. Once you get used to it its not that bad, at least on e30 that is.

But still if possible I would suggest avoiding that on a street car.

[smalcol]

Gaskets

Hey all, did more work on the E3. Almost finished with the pedal mods and installed the E34 linkage system, it ended up fitting great.

Pics, etc. here http://grassrootsmotorsports.com/for...p/61748/page1/


I did have a few questions;

I've got some oil leaks, and will address those, but how many of the gaskets do you replace before swapping the motor in? I was planning valve covers, intake/exhaust manifold, upper timing covers, oil pan.

I am going to use the E30 style clutch master, does it need a really strong return spring? I have looked at the design and see the sturdy looking spring system, wondering if I need to replicate this, or can I just use the more typical longer spring?

Thanks,
Seth

[slammin.e28]

I've got some oil leaks, and will address those, but how many of the gaskets do you replace before swapping the motor in? I was planning valve covers, intake/exhaust manifold, upper timing covers, oil pan.

There is a cylinder head gasket set that comes sans head gaskets. That's what I did. Everything for the top end. Usually runs like $350, but I found them for $180 on Amazon. I think I went on Rock Auto and searched the manufacturers part numbers in Amazon and got it.

[smalcol]

Thanks for the tips, have the gaskets now via Amazon. I'm going to likely change the timing chain guides as well, since I'm in there.

I have the X5 drivers side manifold installed, it's very close to the steering box, but it will work. (cut down significantly) So, now I'm thinking about exhaust design.

I was going to go with dual 2.5" pipes to an X-pipe, and a muffler in the rear. Anyone have something similar? I've seen many with 2 resonators as well. I've listened to many youtube clips, but it's not always clear what the exact configuration is...

[JGood]

I was going to go with dual 2.5" pipes to an X-pipe, and a muffler in the rear. Anyone have something similar?

That's exactly what I'm running. Modified X5 manifolds to 2.5" mandrel pipes, to an X-pipe I made from two 90 degree bends, to a Magnaflow 12468 dual 2.5" in/dual 2.5" out muffler. Sounds decent, but I've heard better sounding m60's. It's not really deep enough for me. It's not obnoxiously loud cruising around town, but when I get up to 75mph or so and am nearly 3k RPM's, it's pretty loud. Not a typical shitty 'droning', just loud. But, I have no sound deadening anywhere on the car.

I'd also put a small flex pipe on each side right off the manifolds if I were to redo it. I probably will eventually.






Here's some video's of me doing stupid things. Not really 'sound clips', but you can here the exhaust. Lol

https://www.youtube.com/watch?v=o60HFC-LQYU

https://www.youtube.com/watch?v=1BakL5ZB3bQ

https://www.youtube.com/watch?v=9kqAcT9QRQk

[smalcol]

Exhaust

Thanks, that helps a lot and your car is very nice, love that color. Your design was pretty much exactly what I was thinking. Where does a deeper sound come from? A muffler with a larger chamber?

I was wondering if it would be too loud without resonators before the muffler, you've said it is a bit much on the freeway. I'm wondering if a larger chamber muffler may make it deeper, while quieting it a bit?

Also, why the flex pipe? To absorb vibrations?

[JGood]

Thanks, that helps a lot and your car is very nice, love that color. Your design was pretty much exactly what I was thinking. Where does a deeper sound come from? A muffler with a larger chamber?

I was wondering if it would be too loud without resonators before the muffler, you've said it is a bit much on the freeway. I'm wondering if a larger chamber muffler may make it deeper, while quieting it a bit?

Also, why the flex pipe? To absorb vibrations?

I'm not sure honestly. My buddy with an e38 740i cut his mufflers off and replaced it with straight pipes, so he just has the factory cats and resonators. It's pretty quiet and sounds much deeper than mine when he gets on it. Another friend did the same thing with his e39 M5, and his sounds amazing. But that's a different engine so it's hard to compare.

I'd add flex pipes because without them, the whole exhaust moves a lot. A 1/4" of movement at the headers translates to like 1-2" of movement at the tips. I welded a bracket to the body for an exhaust hanger, it ripped the metal right off at the weld after a few weeks. I don't have much experience in exhaust design, maybe there's another way to prevent that through proper design of the hangers... I just winged it.

[slammin.e28]

Def do flex pipe. It's on pretty much every car for that reason. The engine moves when you rev it. Exhaust doesn't like to move.

Flex pipe now, or headaches later.

[smalcol]

OK, I understand the flexpipe, but I don't know how many cars it's actually on. I've never seen it on a BMW for example. But I've seen it more frequently on FWD cars, I had logically thought it was because those motors are transverse and twist in a different way? I have a friend who makes aftermarket exhaust parts for Subaru's, I'll ask his opinion too. The only reason I'm hesitant is that I've heard flex pipes leak over time, but they are on many factory cars...

For the sound, I'm also looking for the deeper tone. I'm wondering if I can squeeze two oval mufflers into the space on my E3 right next to each other...

[slammin.e28]

OK, I understand the flexpipe, but I don't know how many cars it's actually on. I've never seen it on a BMW for example. But I've seen it more frequently on FWD cars, I had logically thought it was because those motors are transverse and twist in a different way? I have a friend who makes aftermarket exhaust parts for Subaru's, I'll ask his opinion too. The only reason I'm hesitant is that I've heard flex pipes leak over time, but they are on many factory cars...

Huh. I never really noticed the lack on most BMWs. Looking around, you're right. Has to be with the way they're put together with a "ball in socket" type flange. Regardless, I think it's a capital idea to put on. Also V-band clamps. You'll never go back to standard flanges and gaskets.