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Post by oldgeek on Nov 25, 2019 6:38:43 GMT -5
A die should fix the threads, I do not have one that size. The splines, I dont know about. Pitobread's idea about jbweld could work, but I don't think it is practical considering how many times I take things apart during tuning.
I need to get the video up to see if I am exaggerating, but the fit is pretty bad.
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Post by oldgeek on Nov 25, 2019 18:48:20 GMT -5
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Post by aeroxbud on Nov 25, 2019 19:39:44 GMT -5
That is not good at all.
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Post by Jwhood on Nov 25, 2019 19:57:13 GMT -5
Maybe the threads aren't pitched right,like Brent's issue when he was cutting threads for his adapter?
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Post by oldgeek on Nov 25, 2019 20:59:10 GMT -5
Maybe the threads aren't pitched right,like Brent's issue when he was cutting threads for his adapter? Agreed, the threads can be fixed with the proper die run over them a few times. It's the slop on the splines that I worry about. |
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Post by 90GTVert on Nov 26, 2019 0:52:15 GMT -5
All I have is a really bad and complicated idea. I wonder if an old junk crank with good splines could be used to make a broach? Cut at a taper. Hardening? Weld and drill the center of a starter pawl and broach with tapered crank till it fit. This would assume that you didn't just tear up the crank trying that and that the splines are actually correct other than just being a bit small. Sounds like a real pain and probably not worth it, but if it worked out you'd have a custom pawl just for that crank. Not sure how many other splined parts those engines have. Even if just that part and you really wanted a challenge and it all worked out... if it ever wore you have to create a new custom piece every time. It's the kind of project that you only do if you just want to try it to say you did it and/or as a learning experience. Makes much more sense to replace the crank before going to those lengths.
Could prob be done with some sort of indexing wheel and going in with an appropriate cutter to form your own splines in a pawl. Again, way over-complicated and you'll spend ages making a $3 part to save a $100(?) crank.
Only other thought is; is there anything else with splines really close to that? Prob just cut wrong though, since the threads are off too.
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Post by Jwhood on Nov 26, 2019 7:53:48 GMT -5
Maybe the threads aren't pitched right,like Brent's issue when he was cutting threads for his adapter? Agreed, the threads can be fixed with the proper die run over them a few times. It's the slop on the splines that I worry about. How about the paw is it wore out just throwing ideas outs u probably already thought about the paw wore out,that blows though and just asking for a failure after who's know how many kicks |
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Post by oldgeek on Nov 26, 2019 14:56:32 GMT -5
The answer from the vendor was "NO" at first, but after viewing my video, the vendor has agreed to refund or replace my crank. I think it's pretty cool that they are owning this problem despite its unusual circumstances.
I am still losing out on the labor and a set of crank bearings, but that's ok. It's a lot better than being out $175-200 for a defective crank. Time to split the cases, but it will have to wait for a bit. I had to take my father to the hospital in the middle of the night. Apparently his gallbladder is the issue and they will be removing it sometime in the next 24 hours.
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Post by aeroxbud on Nov 26, 2019 15:22:00 GMT -5
Good of the vendor to do this. Makes all the money spent with them ok.
Hope your father is soon on the mend.
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Post by 190mech on Nov 26, 2019 18:16:48 GMT -5
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Post by repherence2 on Nov 26, 2019 20:13:21 GMT -5
Just make sure you fit up the variator/ pawl parts onto the new crankshaft prior to installing the crank into the case.  |
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Post by oldgeek on Nov 27, 2019 0:26:09 GMT -5
Just make sure you fit up the variator/ pawl parts onto the new crankshaft prior to installing the crank into the case. I am actually going to send a spare fixed variator half to the vendor, along with the questionable crank so they can check the replacement crank before shipping it out to me. |
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Post by oldgeek on Nov 27, 2019 22:43:26 GMT -5
This afternoon I was able to split the cases and get the crank out, boxed up and shipped. While it is apart and I have to wait for the new crank to ship, I think I will bump the exhaust duration up a bit. Currently exhaust is 186 transfers are 130, that exhaust# is a little tame for such a capable looking cylinder. Wondering what I should bump it up to, as this cylinder has 2 small auxiliary exhaust ports. 192 194 196? I could put the mini rotor iggy on this and make it a screamer.  |
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Post by repherence2 on Nov 28, 2019 15:24:16 GMT -5
What pipe are you going to run if you increase exhaust duration?
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Post by oldgeek on Nov 28, 2019 15:31:16 GMT -5
What pipe are you going to run if you increase exhaust duration? PG short, will it do? |
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