A Dumb Question About Trigger Wheels

[ifcho 0]

Hi,

 

Sorry for the dumb question, but I'm purchasing a Megasquirt for my 1.6 8V jetronic, and I cannot find where the trigger wheel is and what type it is?

I'm starting to think there isn't one already...

 

Is it on the flywheel, cause I got one flywheel here and it has only tooths for the starter but I do not see any other.

[Sandy 189]

There isn't one on the L-Jet injection 205s. You can use a flywheel from a later Motronic or Mag Marelli injection XU engine.

[ifcho 0]

I thought so

 

I'm considering now a Mi16 flywheel, as it has a bigger clutch:)

 

Is the flywheel the same size (as Mi16) on XU10J2/XU10J2T, etc? As these are much more common than mi16s here.

[Sandy 189]

Certainly the same as the NA XU10, but not sure about the Turbo.

[welshpug 1,626]

the turbo engines use a different flywheel as its bolted to the ME boxes IIRC.

[ifcho 0]

will search for a xu10 flywheel than,

 

thanks all

[ifcho 0]

After thinking about this for a while I am now in doubt which wheel to choose. I will be running wasted spark ignition with MegaSquirt/Extra, so I definitely need some timing teeth, but instead of getting the heavier flywheel with the 60-2 teeth, I could just get a 30-1 wheel to mount on the crank pulley

 

1.6 flywheel

+ lighter

+ already have it

- smaller clutch

- missing triggering tooths/easy and cheep to add though

 

XU10J flywheel

- heavier

- have to search scrappies for it

+ bigger clutch

+ 60-2 tooths already on the flywheel and an easy to install crank sensor

 

so what are you thoughts?

 

I do also have a 1.9GTI flywheel, from a `92 motronic car, which presumably will have the timing teeth, but then it will be heavier and with a small clutch

 

 

P.S. The car is a 1.6 XU 205, fully stripped, running on bike bodies, with 300deg/12mm lift newman cam and ~11:1 compression

Edited January 6, 2008 by ifcho

[jackherer 543]

Is the car in pieces? If so you may as well fit a 60-2 flywheel but if the car is together I wouldn't take the gearbox off if you can fit a seperate wheel.

[ifcho 0]

Hi,

 

Yes, the car is in pieces

 

Yesterday it was like this

[jackherer 543]

Just chuck a flywheel on and enjoy OEM reliability then

[M_R_205 5 1 Cars]

sorry for the butt in but just to double check things, the mi16`s triger wheel is the fatter `teeth` on the fly wheel? as i was going to buy a trigger wheel for my emerald setup but i wont need to bother...

[ifcho 0]

Do you know the wight of the mi16/xu10j2 wheel? Is it much heavier than the 1.6 one?

[brianthemagical 1]

is there any ned for a bigger clutch? i think the 1.9's and 1.6's use the same clutch, and a 1.9 will have more torque than a 1.6, and a standard clutch had probably taken more torque than your going to throw at it, unless your running wide slicks, towing a trailer and drag racing. the lighter weight of the car will also aid your clutch. you caould always use it as an excuse to get an aftermarket flywheel and clutch.

[cybernck 400 1 Cars]

if it's staying 8v and N/A, then just fit the 205 Motronic flywheel you've already got there .

[ifcho 0]

I'll probably follow your advice cybernck.

Although I will be going to some scrappies these days for some xu10 sumps/pas racks and if I come accross a mi16 flywheel I may get it.

 

And yes, since I started these flywheel saga, I have been looking for an aftermarket alu flywheel.

Will wait to finish at least a few races with this setup though

[ifcho 0]

Ok. I have found a flywheel from a xu10j4 and now I should buy a clutch kit.

 

From searching around thes ervicebox, it seems I need to get a xu10j2 kit (306XSI) right?

The xu10j4 kits are with some bearing integrated into the pressing plate.

The XSI kit has separate bearing and I will just use a generic 205 gti bearing instead?

[jackherer 543]

What gearbox do you have? If its a BE3 then get a clutch for a 1.9 Mi16 XU9J4.

[ifcho 0]

Yes, it is a BE3 from a 205 1.9 GTI