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Author Topic: 750 Kit for 620  (Read 3414 times)
koko64
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« on: September 16, 2018, 01:52:20 PM »
The 750 kit still available? Buddy has good reasons to convert to 750 rather than buy a 900 or 1000.
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DarkMonster620
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« Reply #1 on: September 16, 2018, 04:12:52 PM »
Quote from: koko64 on September 16, 2018, 01:52:20 PM
The 750 kit still available? Buddy has good reasons to convert to 750 rather than buy a 900 or 1000.
Hard to come by, if he wants to convert, have him go the 695 or 696 way or maybe 796 . . . I still have to get my engine of my frame and ship it to NH . . . Took me forever to get a customs permit for me to be able to send the engine to swap crankcases
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Carlos
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Quote from: ducatiz on March 27, 2014, 07:34:34 AM
Ducati is the pretty girl that can't walk in heels without stumbling. I still love her.
"When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth."
koko64
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« Reply #2 on: September 16, 2018, 06:24:28 PM »
Cheers Cuz waytogo
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caperix
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« Reply #3 on: September 17, 2018, 08:09:02 AM »
If the bottom end is still good, you can find used 695, 750, or 800 cylinders & get hi compression 750 pistons.  It may be cheaper than shipping the complete engine.
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Speeddog
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« Reply #4 on: September 17, 2018, 09:07:22 AM »
Not finding the budget-friendly hicomp 750 pistons as available anywhere in a quick search.

There's Pistals, and they're gorgeous, but they're not cheap.

695/800 heads and 695/750/800 cylinders, OEM 750 pistons (likely to be a good idea to check valve-piston carefully, pistons may need a bit of surgery to clear the bigger valves)

695/800 pistons won't work (easily) as they're 2.15mm taller/2.25mm shorter
One can do a thick base 'gasket' or mill the cylinders to get the deck height correct in either case, but the belt tensioner adjustment hit its limits or thereabouts.
I mocked this up ages ago, I've got notes somewhere.

This is all under review in my fleet, as my shop M750's motor is sounding and feeling tired and I need to change platforms.
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koko64
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« Reply #5 on: September 17, 2018, 01:32:38 PM »
Thanks heaps. Much to consider there. The DP kit would be easiest I guess. FBF hi comp 750 pistons and a reborn reline of 620 barrels viable? Do they have enough meat on the cylinder?
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DarkMonster620
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« Reply #6 on: September 17, 2018, 02:20:58 PM »
Quote from: koko64 on September 17, 2018, 01:32:38 PM
Thanks heaps. Much to consider there. The DP kit would be easiest I guess. FBF hi comp 750 pistons and a reborn reline of 620 barrels viable? Do they have enough meat on the cylinder?
If me memory don't fail, FBF is outta business . . . Or, am I wrong?
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Carlos
I said I was smart, never that I had my shit together
Quote from: ducatiz on March 27, 2014, 07:34:34 AM
Ducati is the pretty girl that can't walk in heels without stumbling. I still love her.
"When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth."
ducpainter
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« Reply #7 on: September 17, 2018, 04:14:50 PM »
Quote from: DarkMonster620 on September 17, 2018, 02:20:58 PM
If me memory don't fail, FBF is outta business . . . Or, am I wrong?
They still have a website. Undecided

Pretty sure FBF pistons are made by J&E.
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« Reply #8 on: September 17, 2018, 04:21:30 PM »
Quote from: ducpainter on September 17, 2018, 04:14:50 PM
They still have a website. Undecided

Pretty sure FBF pistons are made by J&E.
OK  . . it is a "new" website . . . But I know I am not that crazy and "a while" back they announced they were closing
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Carlos
I said I was smart, never that I had my shit together
Quote from: ducatiz on March 27, 2014, 07:34:34 AM
Ducati is the pretty girl that can't walk in heels without stumbling. I still love her.
"When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth."
Speeddog
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« Reply #9 on: September 17, 2018, 06:48:58 PM »
IIRC manufactured by JE exclusively for FBF to FBF specs.
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POCO LOCO
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« Reply #10 on: October 22, 2018, 04:08:30 PM »
Business is done , but Enzo is still around selling pistons. Bought some 620 big bore pistons from him last spring. have the correct cylinders from an 800 waiting to be dropped in,........when the 620 blows.
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muskrat
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« Reply #11 on: October 23, 2018, 07:55:47 PM »
Sorry but the 750 is not impressive. Trade and upscale
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koko64
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« Reply #12 on: October 24, 2018, 03:12:47 AM »
I was enquiring about a 750 big bore kit for a 620.
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POCO LOCO
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« Reply #13 on: January 17, 2019, 11:36:47 PM »
Quote from: koko64 on October 24, 2018, 03:12:47 AM
I was enquiring about a 750 big bore kit for a 620.
Enzo has the pistons.
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koko64
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« Reply #14 on: January 17, 2019, 11:57:43 PM »
 waytogo
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