E32 730i V8 into a E30 coupe?

Discuss general engine, turbo and supercharger conversions in this section

Moderator: martauto

Post Reply
User avatar
un1eash
E30 Zone Newbie
E30 Zone Newbie
Posts: 16
Joined: Tue Feb 27, 2007 11:00 pm

Thu Nov 01, 2007 9:06 pm

My friend is about to undertake this conversion, i know its possible but how hard is it going to be?

Cheers
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Thu Nov 01, 2007 11:42 pm

Brakes are the biggest hassle along with the exhaust manifolds. The engine and box can be dropped in in 1 hit. Best to remove the steering coupling though.

Brakes wise, i ditched the whole servo assist setup and went with 2 m/c. You could mount the servo off the pedal ontop of the battery tray, but this was just easier. The shift linkage needs to be shortened and this can be a ball ache. Prop, many choices, e30 M3, or anything with a length of 1450mm or there abouts.

Exhaust- custom as it comes off the N/S manifold and comes round the box. It will join up just after the gearbox. BUT ditch the cats (I havent yet, but will soon enough)

Extend your fuel lines and if you don't want to use spacers between the subframe and steering joint, then you'll have tp ditch the triangle header tank and extend the hoses to the front where the 325 header tank fits on the wing.

Airbox/filter can be a bit of fun to work out. I'm still looking for a filter with a neck of approx 90mm.

Cooling, I've got an e28 m535 rad with the A/C condensor and elec fan keeping things cool.

Fuel wise, It's not that bad (M60B40) Last full tank did 215m till the light came on, and that was giving it death quite a few times at Aces and on the way down. I ws getting worse economy from my M30B35!

gearing, I'm using a 3.15 LSD, but pending how many motorway miles you do, a 2.93 could be better or anything lower still.

Performance, unofficial OBC time with a gentle-ish start gave me a 6.1sec 0-60mph

Weight wise.. It's pretty much balanced contrary to popular belief, in a touring that is. I moved the battery to the rear and its quite neutral.

Hope this helps!
User avatar
Luap
E30 Zone Newbie
E30 Zone Newbie
Posts: 2
Joined: Mon Nov 05, 2007 11:00 pm

Sat Nov 10, 2007 4:28 pm

oze30, I was just reading your interesting post here.. Im really interested in doing an E30 V8 sometime, using a BMW lump of course.
The search function here doesnt appear to return much on "V8" so I was wondering if you might be able to direct me to a few resources/posts that document the conversion? I've had a good rummage through the forums here the past couple of days and not found so much regarding the V8 BMW lumps. In fact I think I found more info on shoehorning in the V12! Im really not interested in the V12 however though.. But very keen on the V8.

No real issues with doing this on RHD cars I presume?

Thanks in advance for help and info :)
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Sat Nov 10, 2007 4:35 pm

Mines RHD, but the only thing is, the manifolds are a pain. I managed to get my V8 already in an e30 and just transplanted the lot. Had to change a few things as they didn't work.

Brakes can be made to work, but it all depends on how you want to route/work them. They actually drop in easier than an M30 Not many people have done the M60/M62. Look up bigdek (author) in the engine swaps.

Else, just ask!

E30.de has some good info, you just need to translate it into english though!
kam-325i
E30 Zone Team Member
E30 Zone Team Member
Posts: 4851
Joined: Tue Sep 27, 2005 11:00 pm
Location: TELFORD !!!! (Shropshire) Stevetigger Land !!!
Contact:

Sat Nov 10, 2007 4:40 pm

Oz...Is yours a black tourer ?
Pete don't care about colour, He would shag a rainbow if he could find the end of it....
Image
User avatar
chu346
E30 Zone Addict
E30 Zone Addict
Posts: 2403
Joined: Mon Jan 10, 2005 11:00 pm
Location: Leicester

Sat Nov 10, 2007 9:16 pm

oze30 wrote:Brakes can be made to work
Well that's good news then!
glenn
Engine Transplant Services
Engine Transplant Services
Posts: 2198
Joined: Sat Jan 29, 2005 11:00 pm
Location: blackwood, south wales

Sat Nov 10, 2007 10:29 pm

Luap wrote: The search function here doesnt appear to return much on "V8" so I was wondering if you might be able to direct me to a few resources/posts that document the conversion? I've had a good rummage through the forums here the past couple of days and not found so much regarding the V8 BMW lumps
http://www.e30zone.net/modules.php?name ... pic&t=2882
User avatar
Luap
E30 Zone Newbie
E30 Zone Newbie
Posts: 2
Joined: Mon Nov 05, 2007 11:00 pm

Sat Nov 10, 2007 11:05 pm

glenn wrote:
Luap wrote: The search function here doesnt appear to return much on "V8" so I was wondering if you might be able to direct me to a few resources/posts that document the conversion? I've had a good rummage through the forums here the past couple of days and not found so much regarding the V8 BMW lumps
http://www.e30zone.net/modules.php?name ... pic&t=2882
Thanks glenn.. By the time you posted that link, I had actually already just finished reading the entire thread! oze30 tipped me off on what to search for, so then i found lots of info including your amazing thread. Very impressed I am too :)

A question or 2 if I may though.. Is it just 6 speed manual boxes that are a sod to source for a conversion like this? Are 5 speeds more readily available? Im not really fussed about cog count you see.

Another gearbox question.. If a 4.0 V8 is used, then im sure its enough oomph for an E30, even if the auto box was retained from the donor. If thats possible(?), then I would think the E30 project car should be an auto too? Or does that not matter?

Just putting a mental shopping list together you see ;) Having said that, as much as i'd like to do this, I don't think its something I could do myself. Unlike an M30/50 swap which I think I could tackle. But at present, im set on a V8.

Thanks again in advance for words of wisdom folks 8)
User avatar
chu346
E30 Zone Addict
E30 Zone Addict
Posts: 2403
Joined: Mon Jan 10, 2005 11:00 pm
Location: Leicester

Sun Nov 11, 2007 1:49 am

You should be able to find a 5 speed from a M60B30 easily enough.
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Sun Nov 11, 2007 3:05 pm

5 speed are easily (read more common) than the 6 speed. Last 6 speed I was watching in german ebay went for close to 1000 GPB. Auto box could be made to work. I don't see why not. I was thinking of trying to mate a steptronic auto and have the almost best of both worlds.
As far as pedal boxes go, It's not that difficult to swap out. I think it's 7 13mm bolts and 2 13mm nuts plus the clutch M/C and brake linkage.

I started as a 2.5, thought about a 2,7 (which is still sat in my old garage) then a 3.5 and now a 4.0 V8. I should have gone the big jump to start, but they were hard to find.

Kam, yeah.. black touring.Going to take some better pics of it after a wash!
glenn
Engine Transplant Services
Engine Transplant Services
Posts: 2198
Joined: Sat Jan 29, 2005 11:00 pm
Location: blackwood, south wales

Sun Nov 11, 2007 5:41 pm

oze30 wrote: As far as pedal boxes go, It's not that difficult to swap out. I think it's 7 13mm bolts and 2 13mm nuts plus the clutch M/C and brake linkage.
the pedal boxes are the same for auto and manual.

on the manual, the clutch pedal sits on the outside of the pedal box and uses a longer bolt that holds/hinges the brake pedal.

on auto's the brake pedal foot area is larger, so you can either cut it down to fit the rubber off a manual, or, fit a manual brake pedal.
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Sun Nov 11, 2007 7:14 pm

Hey glenn! :wave:

This is what it looks like once in.

Image
glenn
Engine Transplant Services
Engine Transplant Services
Posts: 2198
Joined: Sat Jan 29, 2005 11:00 pm
Location: blackwood, south wales

Sun Nov 11, 2007 7:38 pm

excellent colin.
good idea with the brakes.

go alright? :lol:
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Sun Nov 11, 2007 8:14 pm

yeah. Need to lose the cats and sort out my LPG wiring :roll: Brakes need setting up properly, rear locks slightly under VERY hard braking, but acceptable and not bad doing it by Mk1 eyeball!!

I've got a Green Cotton filter on it, Bit better than the stock airbox- which won't fit!
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Sun Nov 11, 2007 8:21 pm

Glenn,

Do you know the pipe size of the exhaust you used? Could I use an E36 M3 pipework/rearbox?
glenn
Engine Transplant Services
Engine Transplant Services
Posts: 2198
Joined: Sat Jan 29, 2005 11:00 pm
Location: blackwood, south wales

Sun Nov 11, 2007 9:22 pm

oze30 wrote:Glenn,

Do you know the pipe size of the exhaust you used? Could I use an E36 M3 pipework/rearbox?
iirc i used two 70mm pipes, but the engine was 5 litres.
i would have guessed e36 m3 pipework would be fine
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Sun Nov 11, 2007 9:25 pm

Cool. Im trying to get a decent exhaust up and runing as the cats are WAAAY too low. Do you know off by hand if the e36 routing will fit under an e30? It looks pretty similar.???
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Sun Nov 11, 2007 9:29 pm

bigdek
E30 Zone Camper
E30 Zone Camper
Posts: 1115
Joined: Thu Feb 10, 2005 11:00 pm
Location: Fife Scotland

Sun Nov 11, 2007 9:44 pm

Them cats are huge aint they an weigh a fair bit as well . Glad to see its mobile m8 :)
User avatar
chu346
E30 Zone Addict
E30 Zone Addict
Posts: 2403
Joined: Mon Jan 10, 2005 11:00 pm
Location: Leicester

Sun Nov 11, 2007 10:04 pm

I got a e46 M3 centre section forsale. The cats on the e46 M3's are at the front so can easily be missed out.
Morat
E30 Zone Team Member
E30 Zone Team Member
Posts: 8943
Joined: Thu Feb 09, 2006 11:00 pm
Location: The Peoples Republic of Yorkshire

Mon Nov 12, 2007 9:56 am

I'd love to see someone do the M62 conversion. My GF's car has the 6 speed/4.4l in an E39 shell and its a beast even with 1600kg to lug around. In an E30 it would be a total monster. If we write it off, I'll be straight on here to get it reshelled into an E30 :D
E30 Touring 0.35 cD - more slippery than prison soap :)

Image
Praise the Lard... and pass the dripping!
User avatar
chu346
E30 Zone Addict
E30 Zone Addict
Posts: 2403
Joined: Mon Jan 10, 2005 11:00 pm
Location: Leicester

Mon Nov 12, 2007 2:49 pm

Let your GF do some reversing :D
User avatar
maxel
E30 Zone Regular
E30 Zone Regular
Posts: 320
Joined: Sat Apr 14, 2007 11:00 pm
Location: Reykjavik, Iceland

Mon Nov 12, 2007 3:16 pm

im lost here.... are u using brakes from 540 or 740?
Axel
BMW 320i Touring (M20B25 RD Headers)
oze30
E30 Zone Addict
E30 Zone Addict
Posts: 4133
Joined: Mon Oct 24, 2005 11:00 pm
Location: Sydney

Mon Nov 12, 2007 8:09 pm

maxel wrote:im lost here.... are u using brakes from 540 or 740?
Neither. I'm running twin tilton M/C with no servo assist and e30 M3 brakes all round
Post Reply