Ready for balancing
Turbo Mini Forums

Just about to take this lot for balancing. Its for Jackmans engine. Consists of Injection clutch, Minispares steel Verto flywheel, evolution straight cut primary gear, steel duplex timing sprocket, standard pulley/damper and Specialist Components crank trigger.

I thought it looked so nice I took some piccies, Jackman, I hope you dont mind, I know your getting the car back from the paint shop today and your mind is on other stuff.

I just think it looks cool. I've never actualy built one up like this

Looks sweet mate. Whos doing the balancing?

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

Cough Cough

MiniSport

Does Phil Hepworth not have his balancing kit still?

OOOOOOOOOOO WOW, thts well pretty, think i may start a project page on here soon.

Manchester Minis

do avonbar do balancing and machine work?
if so there fairly close to me which is a bonus as iv heard good things about them!

what would happen if you were to put it all togther in the engine withoug balancing it all up?
would it make it a 'harsher' engine what?

cheers
josh

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985

As far as im concerned, the important part of the balancing is in the flywheel. At 6000rpm the imbalance is magnified and probibly the main reason flywheels weld themself to the crank!!!

Deffo worth getting it done for the price you pay.

New steel flywheels need to be balanced anyway.

balancing is one of the most important things for engine longevitiy and is why i spent £130quid getting my assembly balanced even if it did involve getting it shipped around.

I've seen the future and tbh its Pie

I hope you get the crank balanced alone first, and then add all the shenanigans.. (Correct spelled Dave?)

can i ask what the point of balancing it with the clutchplate and primary?

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Well, they all spin together as 1 item when on the car. so if they are all balanced together any problems with say the clutch plate will be balanced out... were as if you just balanced the crank they fly wheel mite not be well matched to the crank...
Somthing like that... Morspeed told me thats what we should do soo it was done.

im not saying its bad practise, just curious

is it there to make the dynamic weight more realistic or what?

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Surely adding the clutch plate and primery gear is pointles as they are not keyed to the crank, as soon as they rotate in relation to the crank they will no longer be in balance with it, unless they are perfectly in balence anyway, in which case there's no need to balence them.

You should all read tarzwells book on race minis. There he advise to start with the crank, then balance the clutch plate (on the pirmary), then balance everything as an assembly like pictured. Then it will be balanced even when the clutch plate are moving on the flywheel

do you have an isbn number for it?

As far as was lead to believe, the crank is balanced first, then each subsequent assembly is added and then balanced in turn. So, crank first, crank pulleys next (as one) then flywheel next, Including the clutch and primary gear (as one)

The clutch itself 'should' come with a factory balance on it so its really only the flywheel thats being balanced. If the clutch did not come with a factory balance then all those cars going round with a replacement clutch are all out of balance and the flywheel has welded itself to the crank.

What really pisses me off is the fact that these new steel flywheels come without initial balance, thus, it is not a direct replacement item. You may well be buggered if the engine is in the car and you cannot find anywhere that will balance the flywheel on its own

Doing it the way above, when you change the clutch its still in balance, you change the crank, its still in balance. If you balanced it all in one go, you wouldnt know whats in balance or not.

Please tell me if im talking bollox. Wont matter if i am, as i've left it for the proffesionals

Its only assembled to transport it by the way, everything is loose

Same way as I;ve always had it done Sprocket .... always worked for me, even on my race 4age that turned 10,000 rpm....

Every day is a school day ...........

How fast and how expensive ...... the same question...

Adding one bit at a time and ballencing it make perfect sense,

but I still don't really get the primary and clutch plate,

Ok fair enough balance the primary, but its so small in diameter how much effect will it have? plus i can't see it ever being that far out due the the diameter anyway, i mean do people balance the bolts that hold on the pully and flywheel? what about people that then add locktabs?

The clutch plate may have an effect as its 180-190 mm in diameter, but as sprocks says it will be changed at some stage so why not just balance it on its own? then this can be don to any new plate to be fitted.

im sure they come balanced...

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

I'm not, LOL

ok, the primary due to being machined shoud be pretty much in balance, but the clutch plate i would think would be a bit off.

http://www.minispares.com/Product.aspx?pid=35440

Check the bottom of the page.

They do not mention anything about balance on their Verto wheels, so, assuming that there isnt as there aint on the pre Verto ones.

Okay one more:) The things that are most out of balance is the diaphram, and we often balance the flywheel and diaphram together, and even out the imbalance by machining material away on the flywheel. Next are the clutch plate itself actually, so it should be balanced by itself too.

Mini13, the the reason the primary is included is that it is a good mounting for the clutch plate to balance it centered on the crank, I do not balance the primary.

Then the clutch plate must be included when we balance the whole flywheel assembly, again to "lock" the assembly together so the backplate and diaphram wont move around during balancing.

When you fit the clutchplate, the backplatewill be in its correct position. If hte plate is left out, the backplate and diaphragm will not be situated where it is under real life conditions.

However, My machinist have told me that this is so little that he doesn't see the need for it.