Wouldn't the pistons stil rock like that after indydan's work because he uses the stock pistons? Or does he replate the cylinder to take up the extra clearance?
Long Rod Motor/Indy Dan
- Thread starter TRS
- Start date
Wouldn't the pistons stil rock like that after indydan's work because he uses the stock pistons? Or does he replate the cylinder to take up the extra clearance?
He reworks the cylinder: this includes doing weld up bridge between the cylinder skirts. Machines to size and replates the cylinder. He then hones it to size in house to fit the stock piston correctly. ( something Polaris or their vendor has been unable to do with the Monoblock cylinder to date, the stock cylinder suffers from some sever taper from top to bottom also. Which Indy fixes as well in the process.)
Try checking the piston to wall clearance from up inside the reed cage area with a feeler gauge jammed up inside the cylinder against the piston skirt.
.004-" - .005"is preferred, I.M.O.
Dynotech Jim took apart an 800 that was at an unbelievable .012" !!
Indy Dan strips and has the jugs re-nicasil'd to bring them into tighter tolerance to match the stock pistons.
It's the factory bore job that leaves a lot to be desired
I will be redoing my top end next fall because my warranty is up in January. Indydan's top end kit is actually pretty affordable when comparing what you actually get. The entire LR job is a little less affordable, that's not to say it is over priced. The top end kit is priced very compatibly when compared with other kits. Even though you may not see a performance increase with just the top end.
Has anyone just run his top end? I think the LR motor paired with PARs ultimate power upgrade would be the ticket!
Murph,
Had two good days of riding in CA and then it rained. Hope you get more snow. We got home Monday night.
Rode Cooke today and it was snowing hard, headed back tomorrow. Matt Stoxen said it was piling up over at Belgrade.
The clutch change Ted talked about:
Changed secondary spring out to the red/green 120-220.
Had two good days of riding in CA and then it rained. Hope you get more snow. We got home Monday night.
Rode Cooke today and it was snowing hard, headed back tomorrow. Matt Stoxen said it was piling up over at Belgrade.
The clutch change Ted talked about:
Changed secondary spring out to the red/green 120-220.
So if this is such a good thing with longer rods and some tweaking, why doesn't Polaris do it from the factory and make there engines bullit proof. I don't get it. Reliability and less warranty claims, can you ask for anything more. The Spudman
Update.
Put my longrod motor thru the goods this last weekend.
Definately rips.
My buddy is 60 pounds lighter than me with a 12 163 par head dynoport pipe and clutching.
Mine is an 11 163 with par head super q can and indy dans clutching mtx weights.
I could pass him up the hill in 4 feet of fluff.
Tach goes wham to 8250 better hold on. :^D
Put my longrod motor thru the goods this last weekend.
Definately rips.
My buddy is 60 pounds lighter than me with a 12 163 par head dynoport pipe and clutching.
Mine is an 11 163 with par head super q can and indy dans clutching mtx weights.
I could pass him up the hill in 4 feet of fluff.
Tach goes wham to 8250 better hold on. :^D
X
xc6rider
Well-known member
I started noticing a significant vibration on the last trip. Almost reminds me loose clutch chatter. Prominent between 4400-5600 rpm's, then seems like it goes away, or is drown out by exhaust sound above that. Notice it mostly while letting off the throttle.
Does this sound familiar to what engine vibrations/noise you guys experienced, and what this mod helps cure??
'12 pro 800, stock, 300-400 miles with Dan's clutch balancing.
Does this sound familiar to what engine vibrations/noise you guys experienced, and what this mod helps cure??
'12 pro 800, stock, 300-400 miles with Dan's clutch balancing.
Thats what mine did for a trip right before the cylinder skirt dropped.
Sounds just like a worn out tra 3.
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Thats what mine did for a trip right before the cylinder skirt dropped.
Sounds just like a worn out tra 3.
Sure hope not. Mine started vibrating about 6 rides ago. Still going strong, just hoping to last this season. Then motor and clutches are getting sent off to Dan
