Essex V6 flywheel mods

[tvrmallorca]

Hi all... a little advise needed. I'm currently running 215bhp from the old girl and wanted to know thoughts on lightening the flywheel. Would it be required to dyno the engine out of the car and what bhp should I expect and the last one where can you buy them?

[phillpot]

tvrmallorca said:

what bhp should I expect ?

Will a lightened flywheel give a power increase?

Once the thing is up to speed (which may be a little quicker than full weight) and spinning does momentum keep it going or will it "absorb" power?

[anonymous-user]

Have you considered a lighter clutch - the standard clutch is quite a weight and far lighter clutches are available from AP.

[tvrmallorca]

well.... after talking with Adrian.... looks like a few upgrades......Ap clutch is interesting but whats your thoughts on a Helix paddle clutch??? the car is for tarmac rallies.

Triple webers will probably go on too along with a gripper led diff.... any thoughts TVRm's?

[anonymous-user]

tvrmallorca said:

well.... after talking with Adrian.... looks like a few upgrades......Ap clutch is interesting but whats your thoughts on a Helix paddle clutch??? the car is for tarmac rallies.

Triple webers will probably go on too along with a gripper led diff.... any thoughts TVRm's?

I run triple 42DCNFs, can be difficult to set up as a consequence of parts availability. I like them, custom filters are available, stay away from the three K&N set-up.

I run a mag cased Salisbury on the M. Salisbury is good with correctly set up ramp angles, its heavy. Thats why I run a magnesium casing and many of the internals alloy. Mine is a 3.91 ratio diff but sits behind a properly built T5 with a 0.87:1 5th gear.

[tvrmallorca]

I thought heavy diff would be a good thing to balance the weight out? What ratio would you use for the 4speed? Bearing in mind that I need torque as well as acceleration. Top end is not really an issue since it's closed rallies that I will be doing.... Love your M .....nice paint job....mine will be cream with stripes.

[Slow M]

tvrmallorca said:

I thought heavy diff would be a good thing to balance the weight out? What ratio would you use for the 4speed? Bearing in mind that I need torque as well as acceleration. Top end is not really an issue since it's closed rallies that I will be doing.... Love your M .....nice paint job....mine will be cream with stripes.

Reducing weight is of the utmost importance.

Best,
B.

[anonymous-user]

tvrmallorca said:

I thought heavy diff would be a good thing to balance the weight out? What ratio would you use for the 4speed? Bearing in mind that I need torque as well as acceleration. Top end is not really an issue since it's closed rallies that I will be doing.... Love your M .....nice paint job....mine will be cream with stripes.

I would try a 3.79, I went to a 3.91 from a 3.79 to get better acceleration through the gears, but also to make full use of the 5 speed box. As Bernard stated weight loss is the main aim, weight re-distribution is being worked at the moment.

Thanks for the kind words on the M, she goes for new paint later, in the year all being well. Same colour scheme though

[tvrmallorca]

thanks for the tips....any ideas where I can source a magnesium casing?

[Slow M]

I've been keeping an eye out for 4HU Mag cases, or complete units with Mag housing. Strangely, I have not seen any come up for sale, in the past year and a half. I would have thought that, with them becoming illegal, for use in period specification FIA cars, there'd have been a dozen, or so, used units hitting the market. Still. no such luck, and the new cost is prohibitive, for a "want" item, for me.

Best,
B.

[tvrmallorca]

that then makes it it a little impossible then.....maybe there is an alternative?

[anonymous-user]

tvrmallorca said:

that then makes it it a little impossible then.....maybe there is an alternative?

Paul,
My diff is part of a serious weight watchers plan for the car, one thatthe driver opted out of...

I bought mine, unused, from a chap building a lightweight e-type, it cost me £2300.00.

By the time the diff is built-up and a diff cooler and pumps (duty/standby) are fitted the cost will probably end up more than twice that and so becoming hard to justify.

I wanted to stay with the Salibury as I now how the car drives with a 4HU LSD and I know how robust they are. There are other options though (I have no experience of). Don't let driveshafts be a constraint.

[tvrmallorca]

Hi

Well yes...... Totally understand your position.... The truth is I'm heading that way too. Because I want to end up at 800kgs if I can....so weight saving is an issue and cost for less weight costs money....hurts to say that but true.

Love your project would love to know more PM me if you want

[GTRene]

you can put in a lightweight battery, I just did such thing on my Z3, gone from 21.5kg to 10.5kg with just a different battery, not even a lightweight, but 11kg weight saving :-)
a real lightweight Lithium can go to 1.5<>3.5 kg or something like that, but then you also need a special Lithium charger.

I also saved weight with the wheel combo, tires and rims, they looked better and saved 12kg in total unsprung weight with those.

[magpies]

as far as diff ratio needed. Work out the max speed you want at max revs, then work back using tyre size which gives revs per mile and then look at the best ratio around that. then look at the gearbox ratios available and choose from there.