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post #1 of 18 (permalink) Old 03-01-2015, 05:38 PM Thread Starter
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Help new guy in trouble

Hey everyone! First of all glad to be part of this form.
I've recently bought a 2008 prowler 650 XT, bought it with a bad engine (bevel gears went to pieces and destroyed the case) but it was to come with a supposedly good engine, which wasn't the case, I installed the so-called a good engine run it for a short time and realized it didn't sound quite right, pulled the oil drain plug found metal filings on the magnetic drain plug.
At this point I realized I had to fix the engine,split the case found out that the rod bearing in the connecting rod was bad.
I sent the crank a way to get rebuilt with new rod and rod bearing,then I started to compare the cylinder and cylinder head from the old engine to the supposedly good engine and noticed a major problem it was a much much smaller bore. So then I assume that the engine I am now dealing with is a 550 H1 and not at 650 H1.
Basically what I need to know is can I use my 650 cylinder and cylinder head on the 550 bottom end or is the stroke wrong? if so can I use the 650 crankshaft in the 550 case and then use my 650 cylinder and cylinder head?
Any help would be greatly appreciated
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post #2 of 18 (permalink) Old 03-01-2015, 06:53 PM
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Welcome to the forum, hope someone here can help you. If you don't have a repair manual yet you can download a free pdf copy for each engine type using the link below. Maybe some of the specs will be in them and you might try comparing part numbers to see if they're shared.
"K&T Parts House Lawn Mower Parts and Chain Saw & Trimmer Parts"

'07 Prowler 650 H1 XT, L.E.D. stop/turn signals, Summit Racing heater, AC winch, AC windshield, soft cab & doors, 6' Eagle Plow, oil gauge, Maxxis MT-762 truck tires, AC Fender Flares, E-Brake alarm, Yutrax UTV Jump Seat, Dynatek CDI
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post #3 of 18 (permalink) Old 03-01-2015, 07:15 PM Thread Starter
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Thanks I'll take a look
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post #4 of 18 (permalink) Old 03-01-2015, 07:17 PM Thread Starter
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So Iv figured out the strokes are different so the question is now can the 650 crank be installed in the 550 case?
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post #5 of 18 (permalink) Old 03-02-2015, 04:44 AM
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From everything I've seen, the stroke is Different on the 550, 650, and 700. the cylinder makes up the difference in CC's, the base of the cylinder is where the problem is found. Some early cases would not allow a larger cylinder to be used. Not sure, but I suspect a case could be machined to take a larger cylinder. Head bolts, timing chain, cam, and head all swap between models. Switching cranks would be great if you can find a piston that has the right pin height. So a 650 piston would not work on a 550, or 700 crank. When I built my 750 big bore, I looked at using a 550 Crankshaft, and rod to gain more CC's, nobody makes a piston that would fit that combination, and a one off would be to much money.

2009 700EFI XTX, , AC Winch, 2010 Dust Shield EPI Sport Utility Clutch Kit , Street Legal, Cage chopped 2 ", Aluminum Diamond Plate Trim, Relocated Factory Bladders with covers, 5 Pt. Harness installed, Bed Tiedown System, Scat Pro-Car Seats, Secondary Battery installed, Oil Pressure, Oil/CVT Temperature, Volt Meter & Water Temp Gauges installed with Dash Plate, Bighorns, ITP Black 212 Wheels. Tonneau cover. 750 Big Bore Kit, Web Cam, and Rocker Arms.

Either - Dick or RD

Last edited by Fairmont79; 03-02-2015 at 04:54 AM.
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post #6 of 18 (permalink) Old 03-02-2015, 05:18 AM
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Forgot to Welcome you to the site! So Welcome! Best Prowler AC site by far!

2009 700EFI XTX, , AC Winch, 2010 Dust Shield EPI Sport Utility Clutch Kit , Street Legal, Cage chopped 2 ", Aluminum Diamond Plate Trim, Relocated Factory Bladders with covers, 5 Pt. Harness installed, Bed Tiedown System, Scat Pro-Car Seats, Secondary Battery installed, Oil Pressure, Oil/CVT Temperature, Volt Meter & Water Temp Gauges installed with Dash Plate, Bighorns, ITP Black 212 Wheels. Tonneau cover. 750 Big Bore Kit, Web Cam, and Rocker Arms.

Either - Dick or RD
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post #7 of 18 (permalink) Old 03-02-2015, 06:59 AM
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Quote:
Originally Posted by Gregolds View Post
Thanks I'll take a look
welcome to the best prowler site.....I have a 2006 650 h1 and a 700 cylinder will not work on mine because the sleeve on the bottom of the 700 cylinder wont fit down in the case,but it can be machined to fit........

2015 A/C Sport,With a few add ons..........

Last edited by de3; 03-03-2015 at 12:34 PM.
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post #8 of 18 (permalink) Old 03-02-2015, 07:38 AM Thread Starter
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So basically all I'm looking to do is make a 650 out of a 550 case use the crank, rod cylinder, cylinder head and piston out of the 650 and put it in the 550 case, so by the sounds of it as long as the cylinder will fit on the top of the case it should work
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post #9 of 18 (permalink) Old 03-02-2015, 07:56 AM Thread Starter
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And I would have to assume I need to use the balance shaft that goes with the crankshaft
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post #10 of 18 (permalink) Old 03-02-2015, 08:38 AM
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Yes you would I think that Pork Chop looking thing is pretty much the same for all engines! Just like a BBF!

2009 700EFI XTX, , AC Winch, 2010 Dust Shield EPI Sport Utility Clutch Kit , Street Legal, Cage chopped 2 ", Aluminum Diamond Plate Trim, Relocated Factory Bladders with covers, 5 Pt. Harness installed, Bed Tiedown System, Scat Pro-Car Seats, Secondary Battery installed, Oil Pressure, Oil/CVT Temperature, Volt Meter & Water Temp Gauges installed with Dash Plate, Bighorns, ITP Black 212 Wheels. Tonneau cover. 750 Big Bore Kit, Web Cam, and Rocker Arms.

Either - Dick or RD
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