Force 125 Piston Pin C Clip

[Longblock]

Can you mix style C clip piston pins with OE piston pins w/ pressed in spacers. Repowering 3 cylinders thinking about using Wiseco pistons w/ C clip pins and keeping 1 OE piston w/ pressed in spacers.

 

[pnwboat]

It'll work just fine. You should have no problems.

 

[Longblock]

Thank you

 

[jerryjerry05]

My opinion: Just buy another Wiseco piston.
The OEM setup might work but it's designed to be put together one way.
Or: if you have the OEM piston why take it apart and jury rig it?

 

[Longblock]

Need to re-ring the OE piston. The takeoff rings were in good condition. Piston ring lands are visibly good. But I noticed that I can shift the piston pin back in forth with ringer pressure. The spacers shift with the pin out of the spacer fit of the piston. The spacers seem tight to the pin. Is this normal.

 

[Longblock]

My original question before I found the loose piston pin was matching the new rings to the old piston. I thought I was working with a OE piston but can not find ANY identifying marks on the crown or ID of piston. I didn't want to willy nelly purchase a set of rings and get it wrong.

 

[Frank Acampora]

There is a special tool to install OEM piston wrist pins. The keepers should be very close to the piston lands and the wrist pin should have none to very slight lateral movement. The OEM wrist pins are a slight loose fit to a slight interference fit in the piston. Since , if you have a Force engine the top ring is a semi-keystone ring and since these rings do tend to catch in exhaust ports and break and since you already need to buy rings for it, you would be better off buying another Wiseco piston.

However, the choice is yours and the engine will not know the difference between pistons.

 

[Longblock]

I went with your recommendation. Placed my order today replacing all 4 pistons with Wiseco piston kits and matching wrist pin bearings. Shame the old style piston with pressed in pin spacers has more to give. I'll just use it as a good spare hopefully I'll never need to use it. I need to find a service/repair manual next. Should be stuffing pistons this weekend.

 

[jerryjerry05]

Get a FACTORY manual.
The Clymer ?Seloc cover the basics but they don't really cover as much as the OEM

 

[Longblock]

I almost ordered the FACTORY manual but went with Seloc. I'll have the Seloc by tomorrow. I have time the head gasket backorder is delaying the pistons. I asked the supplier to ship the order complete. The Clymer manual I found was for all Force outboards. Is this the same factory manual your referring to?

 

[Frank Acampora]

Seloc is a poor manual. It leaves many questions unanswered. Clymer is a better alternative. However, if you can find a factory manual--that is, published by Brunswick or US Marine, this is the best. It gives complete instructions on all aspects of the engine and also tells what to expect if you do not follow the instructions. Mt factory manual covers 3 and 4 cylinder Force engines.

 

[Longblock]

Frank - That Brunswick Force 1987 x 125 hp service/repair manual is a rare bird. I'm expecting the Seloc manual today purchased used online cheep. I'll review the manual and upgrade to a Clymer if not happy with content. Mechanical reassembly not a big concern needing the toque specifications, sequence, clearances and orientation . The power head has been touched by others and from what I seen at disassembly I'm questioning everything. The electrical side of the build is the BIG issue with component troubleshooting. I?m going to need a good service manual for the electrical. I let all the floating volatge out of the stator at dissassembly :joyous:

 

[Longblock]

Wiseco floating wrist pin spacers. Wide flange of the spacer facing needle bearings?