The V8 Owners Forum -

Engine is in a TVR tasmin, no problems with clearance in front of the engine, need to know if the interim over will fit over a Cloyes duplex timing chain and if the crank key is long enough to drive the oil pump.

Hi, thanks for the reply but I wish it was that simple, Unfortunately I am running a supercharger with all the associated bracketry and pulleys, hence why it would be much easier to use the interim front cover and retain the current set up, but have the better oil pump thats fitted to the later type...

Hi Guys, after a bit of advice, I have a 3.5 efi (1983) fitted with duplex timing chain and cam driven dizzy with oil pump, I want to swap to the later interim cover with the crank driven pulley, what is needed to carry out the conversion? Don't need the dizzy drive anymore as running coil packs, ju...

Hi Viper, thanks for the oil pump tip, if my new set up does not improve things, I will give you a shout for more info. Ref the blower improvements, gained 55hp and 70lbs of torque, peak power is available from 1700rpm through to 5400 before it starts dipping, engine is a bit gutless under 1300rpm b...

Would recon that you will need to sort out some form of bypass either vacuum or electronic from the throttle body to the plenum. I have been running my Eaton M90 after the throttle body on my efi 3.5 V8 for a year now with no adverse effects other than a poor hot idle due to the length of the inlet...

Would recon that you will need to sort out some form of bypass either vacuum or electronic from the throttle body to the plenum. I have been running my Eaton M90 after the throttle body on my efi 3.5 V8 for a year now with no adverse effects other than a poor hot idle due to the length of the inlet ...

Thanks, will give him a call.

Chedder

Any recommendations for company in the UK who can rebuild an M90?
any ideas on price?

Thanks

Chedder

Have a look at these chaps http://www.sc-power.co.uk/

They do it for 5L V8's so can't see it being a problem, fairly certain TVRpower in Coventry do it aswell.

Chedder

Well spotted, chopped the throttle body off the plenum and adapted it to fit the M90, turned the plenum through 180* to make an easier route for the intercooler induction pipes. Not using a hotwire 14cux, as still on a flapper set up with a jag afm and an adjustable 4cu ecu. Got around most of the p...

thanks, i think any blower will be tight for room anyway. will look at 112`s then, asked for more pics for the one on the forum may be coming my way will have to remove some of the castings to improve height restriction Andy Don't have to mount them in the V of the engine, the M90 lends itself to s...

It does have an over-run valve on the back face of the plenum, but it is the older style (no wires)
Chedder

Having some problems maintaining a stable idle after reving the engine, Currently running an Eaton M90 on a TVR 3.5l, Jag injectors/AFM and adjustable 4cu ECU. The engine starts and runs great but is prone to cutting out if you come off the throttle quickly, have tried allsorts of tweaking but cant ...

If you intercool it you may need to spin the the supercharger a little bit faster, but I would think the 5.75" is a very good start. As with all engine tuning any one part effects all the others. What is the supercharger off? What is the engine going in, a seven? What cam timing are you using?...

kiwicar wrote:Hi
5.75 " pully would assume an 85% eficiency for the supercharger which is not unreasonable. Are you going to intercool it?
Mike

Hi Mike, will be fitting an air to air intercooler in the nosecone.
Chedder