10 replies to this topic

[booton]

ok i have a 998 a+ engine, it a verto clutch

i was wondering if i could change it to a pre verto type.

reason being i want a light weight flyweel and the only ones i can find second hand are pre verto.

are any parts interchangable between the two.

or would i need a complete new clucth 3 pieces, and new clutch cyliner thanks steve

[Dan]

You need everything between the clutch hose and the primary gear. There is an excellent FAQ on clutch systems in the FAQ section. Make sure your new flywheel has the correct ring gear fitted.

[samsfern]

yes, you can change to preverto, youll need a different clutch cover thing with the preverto clutch arm, etc on, and obviously a different clutch/flywheel setup.

[mini13]

As an option MED do a billet verto flywheel for about 120 quid, and minispares do a cast steel lightweight one for about the same price.

[booton]

is there any diff on performance.

all my mini engine have been verto type.

[Cooperman]

IMHO pre-verto is best. I changed one on a 1990 Cooper 1275 and we fitted a light flywheel, an comp diaphragm and comp centre plate.
It is often best to fit the early inertia starter motor as well with the pre-verto ring gear plus a remote solenoid. You also need a pre-verto slave cylinder, clutch arm, release bearing and plunger, clutch arm spring, clutch arm spring bracket, 1/4" UNF stop bolt, slave push rod plus, ideally, new clevis pins for the arm.

[booton]

sounds expensive lol.

any one else think pre verto is better

[Cooperman]

A standard verto with a better quality centre plate at 190 mm will handle the power from a mildly modified 1275.
It seems the clamping pressure with a pre-verto competition diaphragm is better and it's easier to get a lightened one at a sensible price.
If you have a good 2nd hand lightweight flywheel the rest of the parts are not too expensive really. Just make sure that the starter ring is compatible with the starter whichever route you go. One advantage of an inertia starter motor is that it's easier to fit an oil cooler if you want one. The built-in solenoid on the pre-engaged (i.e.verto-type) starter means you will need to actually spacer the grille forwards to get sufficient clearance for the cooler. It's cheap and easy to fit a remote solenoid. Remember the pre-verto clutch is adjustable in service - the verto is not.

Edited by Cooperman, 10 November 2010 - 08:23 PM.

[booton]

can u heat the rings of the fly wheels so i could use my started on a pre verto fly wheel.

because i have 2 good starter motors i want to use

[Cooperman]

All you do is to buy a starter ring for a pre-engaged starter and take it to someone who has oxy-acetylene gear. They heat up the new ring and when it is red hot, you drop it onto the pre-verto flywheel and let it cool. Once cooled it is on there and won't move. just make sure it is put on the correct way round - I once left one at my friends garage and he put it on the wrong way round, thus scrappping my new ring!
Check the position of the pre-engaged starter to the ring before final assembly as you may need a spacer plate.

[booton]

well i have oxy, i have a verto fly wheel, if i bought a pre verto light weight fly wheel then i could just change the rings, tha would save me some money.