Gen 5 Timing Chain and Gears ???

[Rickybobby]

I ended up pulling my motor after all and it was suggested that I change out the timing chain while I have it this "far apart". What suggestions does the gallery have for a replacement set ??? I have had problems finding a set for my Gen 5 motor. Can I use any mark IV set ?? So far the only thing I can tell that is different as far as timing is concerned is the number of bolts that hold the cover on ???? Please correct me if I am wrong and suggest a good quality timing gear and chain set for my Cruiser motor (ie stock or near stock Indmar horsepower, of 1996 vintage).

thanks in advance
rb

 

[Hammer]

I would go with a nice single roller timing set would be fine for your application . That are relatively inexpensive considering...

I'm sure comp cams , cloyes and others make a set for your engine. Have you tried summit or jegs ?

I'm not sure if you can run a gen 4 timing set...

 

[welldigger00]

The difference is the gen 5 has a camshaft retainer plate, that registers on the end of the camshaft. Also the timing gear bolt circle is smaller. I used a cloyes single roller on my build. The chain is bigger, almost like a 520 like dirt bike chain.


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[obnoxious001]

I ended up pulling my motor after all and it was suggested that I change out the timing chain while I have it this "far apart". What suggestions does the gallery have for a replacement set ??? I have had problems finding a set for my Gen 5 motor. Can I use any mark IV set ?? So far the only thing I can tell that is different as far as timing is concerned is the number of bolts that hold the cover on ???? Please correct me if I am wrong and suggest a good quality timing gear and chain set for my Cruiser motor (ie stock or near stock Indmar horsepower, of 1996 vintage).

thanks in advance
rb

The suggestions are correct, it has to be a dedicated Gen5/6 timing set, and if you are retaining the stock cover, will need to stick with a single roller type chain. Depending on hours on the engine, you could even just put a new GM chain on and be good,, (I believe Summit sells them as well)

 

[RUNNINHOTRACING163.1]

The suggestions are correct, it has to be a dedicated Gen5/6 timing set, and if you are retaining the stock cover, will need to stick with a single roller type chain. Depending on hours on the engine, you could even just put a new GM chain on and be good,, (I believe Summit sells them as well)

Great post BIG Daddy :drink:drink:drink:drink




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[Rickybobby]

obnoxious
Thanks for the reply. The motor has a Glennwood Marine (10bolt??) timing cover. Is that the same size as the stock cover ???

Welldigger
Do you have a # for that unit from Cloynes ??

thanks again guys for the help... need all I can get...

 

[obnoxious001]

obnoxious
Thanks for the reply. The motor has a Glennwood Marine (10bolt??) timing cover. Is that the same size as the stock cover ???

Welldigger
Do you have a # for that unit from Cloynes ??

thanks again guys for the help... need all I can get... View attachment 269763

The Glendwood cover should allow a double roller chain set, just make sure it's one for the Gen5/6 cam pattern. For whatever reason, they are higher priced than the MK IV style.

 

[welldigger00]

I'll take a look at my paperwork and see if I can dig it up. I got mine from ray at Dougans machine in so cal.

 

[racerden]

Summit sells a very nice double roller gear KIT complete with Torington thrust bearing. I've installed dozens of these P/N #G6610B. Good stuff

 

[Rickybobby]

RD
thanks for the info, I am on it !!!!!

 

[obnoxious001]

Summit sells a very nice double roller gear KIT complete with Torington thrust bearing. I've installed dozens of these P/N #G6610B. Good stuff

RD
thanks for the info, I am on it !!!!!

Better try the 6617 if your cam is Gen 5/6. The 6610 shows as fitting MK IV cams

 

[racerden]

Better try the 6617 if your cam is Gen 5/6. The 6610 shows as fitting MK IV cams

Good catch Barry, thanks man.