A few months back, I pulled my flywheel to change the rear main seal. I put it on with out lock tite. Since I had my transmission off, I thought I would put some lock tite on. It occured to me that the flywheel has a specific position that it needs to be mounted for timing purposes. I noticed a hole drilled through it and a hole on the back of the plate that it bolts too. When I put it back on, I aligned those holes because it only made sense. I can't see any other purpose for these two holes. Now I need reassurance.


Tell me Suzuki put these holes here as a reference to where the flywheel gets positioned.


I couldn't find anything here about this or in the factory service manual.

-Adam

I think I found my answer on I-Zook if I remember right. That was around 2 A.M. so I could be wrong. It appears there is suppose to be a dowel coming out the back of the crank for alignment purposes. The dowel is gone and only a hole remains.

 This will make it easier to put my distributor in correct later today since I have my flywheel on correct with the hole lined up. It's easier to see the mark on the flywheel than the front pulley for me anyways.

-Adam

Yes there should be a dowel. I would be wary of running it without one, I have heard of the flywheels coming loose.

Yes there should be a dowel. I would be wary of running it without one, I have heard of the flywheels coming loose.

You thiink?   I would think with the 6 or more bolts that I lock-tited on, It wouldn't go anywhere. The dowel would only be about 5 to 7 millimeters. I'm not sure why it's missing but maybe it rusted off.  It sure seems like it was put there so you could keep your flywheel true to your front pulley and in turn true to the distributor position.

Anyways, It's in the right position now which came in handy when I put the distributor back in. Got it right the first time for once.   Helps when you put the engine at 10 degrees btdc.   In the  past, I just put it at tdc and was always off by a tooth and it took 3 or 4 shots to get it right.

-Adam

Quote from: Rhinoman on November 11, 2007, 02:52:04 PM

Yes there should be a dowel. I would be wary of running it without one, I have heard of the flywheels coming loose.

You thiink?   I would think with the 6 or more bolts that I lock-tited on, It wouldn't go anywhere. The dowel would only be about 5 to 7 millimeters. I'm not sure why it's missing but maybe it rusted off.  It sure seems like it was put there so you could keep your flywheel true to your front pulley and in turn true to the distributor position.
-Adam

You would think that the six bolts would be enough. You'd be surprised how many times those loctited bolts go missing. Tim Pink over here races a 413 and had lots of problems with loose flywheels, now he has 4 dowels and the problem is fixed. The dowel is a more precise locater than the bolts, the flywheel can shift slightly under the bolt heads and it all works loose.
Coincidently I've just had a very similar problem with a 3/4 ton radar platfom. Now with added dowels!

I'm not racing and I torked em down good so I hope it holds. I surely hope you're talking a worse case scenario. 4 dowels would have to be precisely located, almost to where you would have to have the motor out to do it so you don't throw off the balance.

Now you got me paranoid. 

-Adam

I'm not racing and I torked em down good so I hope it holds. I surely hope you're talking a worse case scenario. 4 dowels would have to be precisely located, almost to where you would have to have the motor out to do it so you don't throw off the balance.

Now you got me paranoid. 

-Adam

Tim's motor is def. worst case scenario - high revs, high speed and lots of bouncing about. Stock may well be OK without any dowels. I guess I'm a bit paranoid about this but the Zuk engine is the only one that I know of that lose those bolts. Maybe some Zuk owners are a bit careless about preparation and Loctite.

Rhinoman.....it seems like you may be talking about a different type of dowel than what D is.  The dowel he is talking about would not help very much, if at all, if the flywheel bolts would come loose (which should never happen, if they are red lock-tited and torqued properly).
D.....the only purpose for that dowel is to serve as an "alignment" dowel when installing the flywheel.  If you lined up the holes, then you are good to go.....the dowel is definitely not used to hold the flywheel in position, if the bolts were to come loose, or completely out.
I would guess that the dowel was either taken out by a PO, or it had fallen out (it just slips in the hole, not a press fit, by any means)....there is usually enough oil seeping in that area that it shouldn't rust off.