3.0 v8 bellhousing and flywheel manual transmission

[weknowtruth]

im putting a 3.0 v8 bmw engine in a mx5 and need a bell housing and flywheel for it if anyone knows where there is one or what model box is the same please mail me thanks

[Jonsku]

Yes they are. All M60, M62, S62 (and probably N6x) gearboxes are the same. I'd think the V8 diesel box is also usable for that but not sure, though.

[HairyScreech]

were working on a bmw v8 to e30 325 box converter, were talking about £200-£300 for the conversion kit consisting of a flywheel, box bolt pattern converter and release bearing mount.
should be done in the next month or so.

[leeparkes]

were working on a bmw v8 to e30 325 box converter, were talking about £200-£300 for the conversion kit consisting of a flywheel, box bolt pattern converter and release bearing mount.
should be done in the next month or so.

Interested

Will the M20 clutch be used?

[Jonsku]

M20 clutch won't be suitable because the flywheels are for bigger clutches (M20 228mm, V8 240 / 265mm).

Can M20 box and propshaft take the torque?

[v8kris]

HairyScreech

were working on a bmw v8 to e30 325 box converter, were talking about £200-£300 for the conversion kit consisting of a flywheel, box bolt pattern converter and release bearing mount.
should be done in the next month or so.

Very interested! Anymore info? Will this kit allow any bmw v8 to fit onto a 325 gearbox?

Kris

[HairyScreech]

plan is to use a custom flywheel, spacer plate, m20 box and m20 sachs sport clutch.

spacer plate will convert the two housing patterns,
the new fly will bolt on to the crank along with the existing torque converter wheel/backplate (to act as a ring gear only and keep the standard starter motor)
sachs sport clutch is capable of the torque of turbo m20s which easily put down 300hp/300lb/ft
ass is the 325 getrag 260 box,

the box and clutch are proven in other cars running more power, yes there near there limits but if you scratch one then ts £50 for another, there also rebuildable and serviceable, unlike the 6 speed ones that leave you with a £500 a pop box.
because it takes an i6 box you have the option of the later non overdrive boxes or the 6 speed boxes.
first converter will be for a e30 box though unless someone wants to supply me with ACCURATE measurements of the other box bolt patterns with a vertical mark for angle reference.

the converter should allow any small pattern i6 box to fit onto the back of any of the bmw v8s,
technically it should allow fitment to any of the bmw 9 bolt crankshafts and hopefully the v12 bell pattern as well.

the current design is looking to weigh in at about 9kg for the ring gear wheel and the custom flywheel, will be running some more fea and doing further design work before the first one gets made, as the weight may go up or down depending on the strength required, still 9kg is less than the dual mass ones that come as standard. considering this is my third design so far you can rest assured that every other possibility has been considered.

the first one built will be going into this:


and probably wont be ready for production until the end of the summer if you guys can cope with waiting that long (mainly as thats when ill get some time to finish the designs/fea and uni wont be pounding on my ass.)

[Jonsku]

Hmmm... there has been couple of times when E30 325 shaft (from gearbox to diff) has broken in two at the front-part after V8 swap.. Therefore i wouldn't use those, but instead swap to bigger parts so the thing would actually work longer..

[slipdif]

Definately interested in buying a kit when its ready.

[HairyScreech]

i thought i had posted but obviously something messed up.

do you mean the e30 propshaft then theres not a lot we can really do about that appart from custom shafts which are uber expensive.

unless someone can think of a similar length or shorter shaft that will fit at both ends?

but tbh i think were fairly stuck with the e30 shaft.

[Jonsku]

I use E34 540 front end and E30 325 rear end, with modified center section:



I'm not saying the e30 325 shaft would always break, they do last also in turbocharged +600hp beasts, but just to warn you that they might break..

[HairyScreech]

yeah, its all good info, we will have to see what can be done, if there is a shaft with the same output flange and a little less length perhaps.
if not then get a few propshafts made up, having the prop modified is required anyway for these v8 conversions is it not? theres no simple way of fitting a propshaft?

i think iv found away to get the 240mm clutch inside the getrag 260 bellhousing so any clutch worries are now sorted.

the way the converter is working out though you should be able to use anything from an e30 260 box right up to an e46 m3 csl box, and that includes the diesel boxes for a close ratio 6 speed.

i started making the mock ups of the converter to check clearance issues etc before anything gets done in metal, the main reason for the build is to get a box into the project car that wont cost us £500 a pop when we break them (and we will).
we have bumped into a guy locally that is building an m60 e30 so we now have a car to double check fitment against, but i dont think there is going to be much of an issue there, the only change will be the box is a little further back than normal. (like 35/40mm depending on where you mount the v8 in relation to the i6)

heres a few pics of the wood ones being done as templates.






and jonsku, you mention a trigger wheel built into the m62 flywheels, is this on the part that holds the ring gear? if so then thats a win as that bit remains on the engine as part of what we plan to do so it should mean this will work for m62 and s62 engines as well.

[leeparkes]

i thought i had posted but obviously something messed up.

do you mean the e30 propshaft then theres not a lot we can really do about that appart from custom shafts which are uber expensive.

unless someone can think of a similar length or shorter shaft that will fit at both ends?

but tbh i think were fairly stuck with the e30 shaft.

M20 325i prop is 1483mm long, the 'Thicker' E36 328i manual prop is 1492mm and it also uses a larger guibo.

The M20 gearbox flange can be swaped for an M30 item which in turn will mate up to the E36 328i prop

To use the 328i prop the centre bearing needs to be reversed

Worth a thought

[Jonsku]

and jonsku, you mention a trigger wheel built into the m62 flywheels, is this on the part that holds the ring gear? if so then thats a win as that bit remains on the engine as part of what we plan to do so it should mean this will work for m62 and s62 engines as well.

The trigger wheel is not with the starter ring, but with the flywheel itself. I don't understand what you mean by "ring gear" ?

The sensor is bolted on clutch bellhousing on RHS.

[Andy325i]

Nice work

Have a think about what happens if the prop does let go, one thing to do is weld "loops" around the prop onto the body so that if it did break it stays spinning inside the loops rather than cutting the floor/someone in half!

I've heard of a few not nice incidents and if I were building anything with a serious increase in power I would deffo be fitting loops for what they cost (Peanuts)

[DanThe]

To use the 328i prop the centre bearing needs to be reversed

This is wrong, bad info, every time I read it I can imagine somebody hammering f*ck out of a bearing trying to get it off after fitting it on this info without checking. If you fit the centre bearing back to front or reverse it, the prop will be out of alignment, when using an E36 prop you simply fit the centre bearing to the other half of the prop, which is pretty obvious once you see it on the floor

[leeparkes]

To use the 328i prop the centre bearing needs to be reversed

This is wrong, bad info, every time I read it I can imagine somebody hammering f*ck out of a bearing trying to get it off after fitting it on this info without checking. If you fit the centre bearing back to front or reverse it, the prop will be out of alignment, when using an E36 prop you simply fit the centre bearing to the other half of the prop, which is pretty obvious once you see it on the floor

You need to write a book Dan.

Heard it mentioned on here so many times i thought that was how it was done i have one stashed away and this was the plan for it.

Thanks.



Sorry for the bad quote.

[leeparkes]

were working on a bmw v8 to e30 325 box converter, were talking about £200-£300 for the conversion kit consisting of a flywheel, box bolt pattern converter and release bearing mount.
should be done in the next month or so.

Any updates?

[BaldBimmer]

+1

I'm really interested to see if these kits are availiable yet. I want to buy a M60 but gearbox issues are holing me back. This sounds like a good solution. Whats happening Hairy??

[HairyScreech]

sory boys, havent been in swansea much over the summer so little progress, but, we have the cash ready to get the job done and a 325 box for it ready to kick off on it as soon as i get back up there.

[skipunda]

Another project Mr.Screech?!

[HairyScreech]

well its for the v8 ka, we wanted a good 300hp out the box v8, that would take a bit of boost later on and would fit in the space we had, the m60 was the prime choice, till we tried to get a gearbox for it....

its only 50% my project, it technically belongs to a mate of mine, but iv got a big hand in it as hes paying and im building.

the turbo ka is mine, and only needs money thrown at it to have it on the road now, the 2.8 is also mine.

the 2.8 is required for uni work, so thats gunna be mostly done in uni time.
the turbo ka can only be done in the holidays as its in warminster
the v8 is in swansea so thats done in spare time in swansea.

im not to bad on projects atm.

[bmwrobbie]

Any updates ?

[andyborris]

Bump?

[kingludba]

Bump?

[Jean]

Interesting..

[eiddz]

Interesting..

indeed..

[Phill172]

I want one of these adapter plates.
You can test it on mine too!

[eiddz]

I want one of these adapter plates.
You can test it on mine too!

I would also love one of those plates !
No updates?