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Engine Cases

  • Thread starter Thread starter slob
  • Start date Start date
S

slob

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Are engine case matching sets, or can I use a different bottom an a existing top? Its a GS1100g.
 
BUMP..... looks like I'm gonna find out for myself, I'll let ya know.
 
My understanding (I could be wrong) is that the top and bottom go together in a matched set. They are machined on the sandwiched horizontal surface, bolted together, and then the critical surfaces such as round the bearing surfaces and outer side cover surfaces are machined. In this way very close tolerances can be held. I have a hard time imagining that Suzuki could build the cases any other way.
 
Nessism said:
My understanding (I could be wrong) is that the top and bottom go together in a matched set. They are machined on the sandwiched horizontal surface, bolted together, and then the critical surfaces such as round the bearing surfaces and outer side cover surfaces are machined. In this way very close tolerances can be held. I have a hard time imagining that Suzuki could build the cases any other way.
Click to expand...

I agree. Both cases are bolted together for line boring of the crankshaft. They should be used as a matched set.
 
Thought most, if not all, Suzuki's came as a crankcase set. Same as cylinder heads and cam caps.

But I may be wrong.

Suzuki mad
 
I didn't want to hear that, I have the top case al set up with the crank and gearbox in and as I was going to put the bottom on I saw it had been broken and puttied at the bottom mount area, would seem someone used a bolt too long at some stage. I put the broken case on another top I had there and it seems to match okay, make me wonder how accurate the japs are in there machine shop and if I could give it a go. As they're not shell bearings it shouldn't matter as much.

Tell me I'm just being a lazy bastard and to do the job properly.
 
Tell me I'm just being a lazy bastard and to do the job properly.
 
slob said:
I didn't want to hear that, I have the top case al set up with the crank and gearbox in and as I was going to put the bottom on I saw it had been broken and puttied at the bottom mount area, would seem someone used a bolt too long at some stage. I put the broken case on another top I had there and it seems to match okay, make me wonder how accurate the japs are in there machine shop and if I could give it a go. As they're not shell bearings it shouldn't matter as much.

Tell me I'm just being a lazy bastard and to do the job properly.
Click to expand...

You know you are! Do you want this "new" crank going the same way that the last one did? Slight misalignment could do just that.
Bite the bullet and do it right. Next time you'll beat the Ghan "fair and square".
 
Boy am I havin' fun here. Got it back together, in matching cases, got the cases together, pistons on, than as I was putting the head on one of the studs pulled out of the case!!!!!!! Yep now I ahve another problem..

Now when I was working on a VW many moons ago I had this happen and they sold me a stud saver thing that was a stud with a savage tapered thread on it that burried itself into the case and saved dismantling and helicoiling the case. Please tell me someone has heard of this type of thing for my Suzi as I've just spent over $300 on gaskets and the like.[-o<
 
Your putting alot of time and work into it. Do it right. Helicoil it.
 
Not heard of that one for Suzuki's. Think you got to go for a helicoil or a weld and retap the thread job.

Sorry!

Suzuki mad.
 
Okay, you guys keep telling me what I already know, Thanks for being here to keep me on the straight and narrow. Went and bought a helicoil today, or at least something similar that looks like it's better to install. Hope I can reuse the gaskets, they should be okay I put them on dry.
 
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