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750TT
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Post subject: Indiana 650 / Pantah 500 Posted: Fri Jul 17, 2020 2:57 pm |
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Joined: Sun May 08, 2011 12:17 pm Posts: 407 Location: Europe
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Hi. I have got a 650 Indiana engine and I want to put two original pantah 500 cylinder heads to convert it to rear intake. What result can I get in engine performance with that combination?
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618F1
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Post subject: Re: Indiana 650 / Pantah 500 Posted: Sat Jul 18, 2020 10:13 am |
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Joined: Thu Oct 14, 2010 11:23 am Posts: 1812
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Hello to the islands 750.
The only thing I can think that would effect performance is a teeny-tiny bump in compression because the chambers on the 500 heads are a bit smaller. Valve sizes are the same in both versions, and it may be that the ports on the 650 heads are a little bit larger —- easily fixed. They both used 36mm carbs. The stock cams in both have very close specs. I seriously doubt that you would feel any difference. But they would look right!
I hope someone posts after me; I am sick of seeing my moniker here.
MikeV
PS after 750 sent photos: Send that engine to Lou; he would love to spit shin it!
Last edited by 618F1 on Sat Jul 18, 2020 4:28 pm, edited 1 time in total.
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750TT
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Post subject: Re: Indiana 650 / Pantah 500 Posted: Sat Jul 18, 2020 2:23 pm |
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Joined: Sun May 08, 2011 12:17 pm Posts: 407 Location: Europe
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ducadini
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Post subject: Re: Indiana 650 / Pantah 500 Posted: Sun Jul 19, 2020 4:56 am |
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Joined: Wed Sep 11, 2013 7:13 am Posts: 268
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Please tell me how that works out, I've got the same engines and parts here. Just couldn't decide (yet) what to do with them.
ciao ducadini
_________________ Nego i ricordi peggiori, richiamo i migliori pensieri
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750TT
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Post subject: Re: Indiana 650 / Pantah 500 Posted: Sun Jul 19, 2020 6:04 am |
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Joined: Sun May 08, 2011 12:17 pm Posts: 407 Location: Europe
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ok, it will still take some time. But I will put the result here. It is so expensive to find a rear cylinder head, which was the solution, for the old cylinder heads of 500, stored years ago.
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CrankyRoller
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Post subject: Re: Indiana 650 / Pantah 500 Posted: Sun Jul 19, 2020 9:05 am |
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Joined: Tue Oct 05, 2010 9:21 am Posts: 274 Images: 0
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I believe the Indiana shares the same transmission as the old Elefant 650 with wide ratios (first is good for hill climbing). You might consider switching over to pantah gears. -Cranky-
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750TT
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Post subject: Re: Indiana 650 / Pantah 500 Posted: Sun Jul 19, 2020 9:15 am |
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Joined: Sun May 08, 2011 12:17 pm Posts: 407 Location: Europe
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CrankyRoller wrote: I believe the Indiana shares the same transmission as the old Elefant 650 with wide ratios (first is good for hill climbing). - Great, here I can exploit that advantage
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e.ducati.on
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Post subject: Re: Indiana 650 / Pantah 500 Posted: Tue Jul 21, 2020 12:35 pm |
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Joined: Fri Dec 16, 2016 4:25 pm Posts: 20
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Will the 500 heads drop right on to 650 cases? Stud pattern is the same? I’m wondering about a picture of an Arrmacchi 350 with what appears to be a Pantah top end installed but the 650 Pantah studs are further apart side-to-side than the Aermacchi studs. Thought it might be a 500 top end.
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750TT
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Post subject: Re: Indiana 650 / Pantah 500 Posted: Tue Jul 21, 2020 3:18 pm |
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Joined: Sun May 08, 2011 12:17 pm Posts: 407 Location: Europe
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e.ducati.on wrote: Will the 500 heads drop right on to 650 cases? Stud pattern is the same? I’m wondering about a picture of an Arrmacchi 350 with what appears to be a Pantah top end installed but the 650 Pantah studs are further apart side-to-side than the Aermacchi studs. Thought it might be a 500 top end. 350,400,500,600 , 650 and 750 have the same bolt distance
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