Bits of Many Vehicles

[bmvroadster]

I have recently completed building a roadster using a 3.4 DOHC engine. The styling is loosly based on the pre WW2 BMW 328 roadster. The engine drives the rear wheels via a Toyota Celica 5 speed and BMW diff. A UK Ford front suspension, steering (with a quick rack and pinion kit) and at the back, BMW semi trailing arm rear end. Australian GM front disc brakes as these are ventilated and the same metric bolt pattern as the BMW rears. On the engine I am using a Link engine management system (made here in NZ). The chassis consists of twin 3 inch x .062 steel tube with a stressed aluminium transmission tunnel. The body is panelled in .050 aluminium hand formed.
Weight is 960kg (2100 lb) so performance is very good. The car is road legal and is called a BMV (Bits of Many vehicles) See attached photos for more detail.

[Darin]

Very Nice! Welcome to 60DegreeV6.

[onefastV6]

Wow, that is an awesome car.

Congrats and welcome!

[dohcfiend]

BADASS!!!!

[SappySE107]

That is amazing Very nice setup and I love the name. I bet that engine loves a 2100 lb vehicle. What did you have to do to mate the engine to the toyota transmission?

[bmvroadster]

To mate the Toyota gearbox to the GM V6 I used a piece of 1/2 inch steel plate profile cut to suit. This is attached, on the original dowels, to the block with countersunk socket screws Loctited on final assembly. The gearbox bell-housing was then temporarily clamped to this plate and trued up to the crankshaft flange. The bell-housing dowel holes were then transferred to the steel plate. The plate was then removed from the engine so that the bell-housing could be re-attached and used as a drill jig to drill the Toyota bolt holes. The original auto-trans flex-plate was discarded and replaced by a flywheel turned up on a lathe from 2 inch steel plate to suit a Toyota Cressida starter ring gear and a Ford 3 Liter Capri Clutch. The driven plate is Toyota (or Daihatsu light truck). A Toyota Cressida geared starter motor is mounted on the 1/2 inch plate alongside the sump.

Jim

[AWeb80]

That is sweeetttt.


Now, you should design a custom intake manifold that would give you some more room in there and make the intake come to the front of the engine bay instead of the back.

[SappySE107]

I like the back more using a cowl Less work that way.

[bmvroadster]

That is sweeetttt.


Now, you should design a custom intake manifold that would give you some more room in there and make the intake come to the front of the engine bay instead of the back.

I had originally altered the timing cover assembly so that the standard inlet manifold could be reversed. I originally bought this engine to fit to a Series 4 Mazda RX7 Cabriolet (my wifes car) but it all got too involved. I figured that the Mazda would still be worth junk money for resale so decided instead to build another car.

The reason that the manifold is left standard is:

1. Partly because of the total amount of work in the whole project, around 2000 hours.

2. The performance is excellent pulling a light car. I consider the gain using an aftermarket ECM is probably greater than a factory ECM and a special manifold.

3. I wanted an easy to drive turn key road car so opted to leave what GM had done alone.

4. The air filter inlet is close to the side grilles in the body where there is cool air.

Using a front mounted manifold would mean taking warm air from behind the radiator. The result - less power. Hope this explanation is of interest.

[AWeb80]

yeah....makes sense.

[dohcfiend]

i have toyed with the idea being how a friend of mine is thinking about putting one in a s10 he bought for nothing.

i thought about the intake plenum be4. u should look into a newer style 96-97 plenum and intake as the runners from intake to plenum are lined up in a row instead of staggered like on the older plenums. only thing really needed to make that work would be a spacer with both bolt patterns on it.

but the inlet arm may interfere with your serpentine setup. either way your setup is very nice and wouldn't be worth the hassle i would think.