RE: E39 M5 V8 E31 8 Series = classic BMW perfection

RE: E39 M5 V8 E31 8 Series = classic BMW perfection

Author
Discussion

Joe M

683 posts

247 months

Saturday 18th May
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Have they got the brake disks on the wrong side?

GTRene

16,780 posts

226 months

Saturday 18th May
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Joe M said:
Have they got the brake disks on the wrong side?
now you mentioning it, the front for my liking yes, this way its gonna dive even more.

but I do not know the reason behind why they chose it like that, hm I looked up another base car 850i came across this 840ci and it seems at least at this wiki picture example, its the way BMW did that mounting point at the front...

see this 840ci example, a bit hard to see but its the same way.


Matt80M

1,139 posts

174 months

Saturday 18th May
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This would look spectacular on a set of gold BBS deep dish wheels.

JJJ.

1,390 posts

17 months

Saturday 18th May
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ArgonautX said:
birky said:
Looks great but agree about the wheels.
Is there much weight difference between the the V12 and V8? Enough to affect handling?
There isn't... about 30-40 kg. V12 is a simpler engine, no VVT and SOHC head.
Maybe not but I think it's fair to say the V12 is still heavier plus it's autobox would be heavier than the manual. Definitely, the Manhart should be lighter and less nose heavy. How that translates into improved handling is anybodies guess but I reckon the car is still a GT rather than the stated sports car reported.

Joe M

683 posts

247 months

Saturday 18th May
quotequote all
GTRene said:
Joe M said:
Have they got the brake disks on the wrong side?
now you mentioning it, the front for my liking yes, this way its gonna dive even more.

but I do not know the reason behind why they chose it like that, hm I looked up another base car 850i came across this 840ci and it seems at least at this wiki picture example, its the way BMW did that mounting point at the front...

see this 840ci example, a bit hard to see but its the same way.

I mean the way the holes are drilled... They look like e46 csl disks which are 340mm.

AmyRichardson

1,151 posts

44 months

Saturday 18th May
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ArgonautX said:
There isn't... about 30-40 kg. V12 is a simpler engine, no VVT and SOHC head.
There was an American chap who ran an M70, stroked and lined to 86x86 (so bang on 6.0lt), plus with a fair bit of breathing work, in the back of an Ultima.

About 410rwhp, so 470+hp at crank without going to forced induction or fancy valve gear.

I can't help thinking that would have been a more desirable route.


ArgonautX

195 posts

53 months

Saturday 18th May
quotequote all
AmyRichardson said:
There was an American chap who ran an M70, stroked and lined to 86x86 (so bang on 6.0lt), plus with a fair bit of breathing work, in the back of an Ultima.

About 410rwhp, so 470+hp at crank without going to forced induction or fancy valve gear.

I can't help thinking that would have been a more desirable route.
Boring a M70/73 is a bit of a problem, since you need to reapply the silicone based coating on the cylinder walls. Not a lot of places can do that. I know that some may have gone the route of steel liners, but I'm not sure how successful that was. I remember reading that at least some of those had issues with oil consumption .

Leins

9,504 posts

150 months

Saturday 18th May
quotequote all
AmyRichardson said:
ArgonautX said:
There isn't... about 30-40 kg. V12 is a simpler engine, no VVT and SOHC head.
There was an American chap who ran an M70, stroked and lined to 86x86 (so bang on 6.0lt), plus with a fair bit of breathing work, in the back of an Ultima.

About 410rwhp, so 470+hp at crank without going to forced induction or fancy valve gear.

I can't help thinking that would have been a more desirable route.
Racing Dynamics were getting over 400hp from their 5.5L version of the 850Ci 5.4L M73 in the E31 K55. That was also the engine they put in the mad E36 Compact

AmyRichardson

1,151 posts

44 months

Saturday 18th May
quotequote all
ArgonautX said:
Boring a M70/73 is a bit of a problem, since you need to reapply the silicone based coating on the cylinder walls. Not a lot of places can do that. I know that some may have gone the route of steel liners, but I'm not sure how successful that was. I remember reading that at least some of those had issues with oil consumption .
Looking back at the (ancient!) blog it seems 86mm needed new iron sleeves; so no small job. But more difficult than making adaptations to a whole new drivetrain?

(And obv a V12 is 1000% cooler than a V8!)

ArgonautX

195 posts

53 months

Saturday 18th May
quotequote all
AmyRichardson said:
Looking back at the (ancient!) blog it seems 86mm needed new iron sleeves; so no small job. But more difficult than making adaptations to a whole new drivetrain?

(And obv a V12 is 1000% cooler than a V8!)
Actually, since E31 did originally came with a M62 engine, I don't think S62 is that big of a job(S62 is basically a souped up M62).

V12 is cooler than the V8, I'll agree. I also think that it suits the car more, as it'll never be an agile sports car.

rottenegg

500 posts

65 months

Saturday 18th May
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Apart from the wheels, that is mega. Probably the most handsome car BMW ever made, back when their design team weren't on drugs.

Although if it were my car, I'd drop an LS7 motor in instead because E39 V8 parts will dry up soon enough. Same weight, but more grunt and capable of shed loads more without breaking into a sweat.

Armagreggon

44 posts

116 months

Saturday 18th May
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The wheels are total gash, waaaay too big. But the rest of it looks very nice

oedipus

387 posts

68 months

Saturday 18th May
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GreatScott2016 said:
To me that looks odd, particularly from the front. Never been a fan of pop up lights and given the “running” lights that sit just below, it’s not a cohesive package for me. Not unattractive elsewhere though smile

Edited by GreatScott2016 on Friday 17th May 16:40
+1

GTRene

16,780 posts

226 months

Saturday 18th May
quotequote all
Joe M said:
GTRene said:
Joe M said:
Have they got the brake disks on the wrong side?
now you mentioning it, the front for my liking yes, this way its gonna dive even more.

but I do not know the reason behind why they chose it like that, hm I looked up another base car 850i came across this 840ci and it seems at least at this wiki picture example, its the way BMW did that mounting point at the front...

see this 840ci example, a bit hard to see but its the same way.

I mean the way the holes are drilled... They look like e46 csl disks which are 340mm.
ah, I thought the caliper at the front :-)
but I see what you mean, a lot of those discs 1 piece with holes, only come in 1 sort, not left and right like you get with 2 piece discs, I had such also on a project car then the 325 mm I believe, anyway's, I looked and thought huh? they send me 2 of the same... so I called, they are all like that sir... aaargh

But if you have the 345 mm 2 piece, those are in left and right (at least some are, those what I had on another car)

Alpenus

131 posts

32 months

Saturday 18th May
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Alpenus said:
wheels
This +1

B'stard Child

28,501 posts

248 months

Saturday 18th May
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Still Mulling said:
Ah, I see. Simplistically elegant as they are, there were too many twin-leg 5-spokes in Max Power when I was a kid for me to be in love with them.

I also didn't know that those that I posted are known as throwing stars. They are now even cooler to me! cool
I think or rather I was sure that the throwing stars were plastic trims over a m parallel style alloy

Stick Legs

5,104 posts

167 months

Saturday 18th May
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A friend of mine built one of these himself.

Avus Blue 840ci + rolled E39 M5.

He had supercharged it last I saw.

Cool car & what BMW should have made in the first place.

He’s divorced now, which says a lot about how time consuming the project was.

Slippydiff

14,903 posts

225 months

Sunday 19th May
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Been done before by Renner in the States :

https://www.carthrottle.com/features/company-wants...













Slippydiff

14,903 posts

225 months

Sunday 19th May
quotequote all
Matt80M said:
This would look spectacular on a set of gold BBS deep dish wheels.
As requested ^

Matt80M

1,139 posts

174 months

Monday 20th May
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Slippydiff said:
As requested ^

Pretty