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12-14-2007, 07:31 AM
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#1 (permalink)
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Thread Ender
Join Date: Apr 2006
Location: Troy Ohio
Posts: 1,814
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88" Xl
What kind of gains could I expect by putting 88" cylinders and pistons on my Buell? Would probably switch to a carb. at that time. I'm trying to keep initial cost down. I thought later I could do the heads and cam.
__________________
2007 Street Glide
Hobanized Crank, Axtell 117" cylinders, CP flat tops, 10.6:1 CR, Woods TW8, R&R cast heads, R&R roller rockers, HPI 51mm T/B, 4.9 g/s SE injectors, D&D Fat Cat 2into1 QB, Rivera Pro Clutch, Tuned with a TSII+, Never been dynoed
George W. Bush - lowered taxes and likes killing terrorists - my kinda guy
Obama - raised taxes and likes reading terrorists their rights -  
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12-14-2007, 09:34 AM
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#2 (permalink)
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Obsolete Rider
Join Date: Jun 2005
Location: NC
Posts: 1,674
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Sorry boss, just had to post sumtin.
Look back a few days, we just had a short discussion about increased
displacement XL's.
From what was told, you'd not want to be going and doing nothing like dat.
It would make too much HP and too much Tq. 
(might make you have a permanent grin and how would you explain that
to the leos?)
__________________
1998 Obsolete EVO Springer
Now boasting 85 cu in (well, almost)
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12-14-2007, 09:38 AM
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#3 (permalink)
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IronButt
Join Date: Sep 2006
Location: Huntersville NC
Posts: 872
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To go to 1450cc you have to have the cases machined, depending on what year Buell you have, some years have better heads, you can get 100 HP pretty easy going that route.
Check out Steve website http://www.gmrperformance.com/
He has some dyno sheets posted. |
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12-14-2007, 10:34 AM
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#4 (permalink)
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Iron Will
Join Date: Dec 2003
Location: Munnsville NY
Posts: 4,361
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Xl
Quote:
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Originally Posted by Bubba Neil
To go to 1450cc you have to have the cases machined, depending on what year Buell you have, some years have better heads, you can get 100 HP pretty easy going that route.
Check out Steve website http://www.gmrperformance.com/
He has some dyno sheets posted. |
I agree with 100 hp, and as well as 100 ft/lbs.
Straightfoward combination, that we have done many times over the years.
__________________
"If a street Harley doesn't have torque, how much horsepower it makes, simply does not matter."
"Treat your dogs with respect, keep your traps oiled and checked, and Beechnut is the tabacco to chew." The Renn, date unknown.
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12-14-2007, 03:23 PM
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#5 (permalink)
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Thread Ender
Join Date: Apr 2006
Location: Troy Ohio
Posts: 1,814
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So you guys are saying without any head work or cams, I could expect some descent gains with just the displacement increase.
__________________
2007 Street Glide
Hobanized Crank, Axtell 117" cylinders, CP flat tops, 10.6:1 CR, Woods TW8, R&R cast heads, R&R roller rockers, HPI 51mm T/B, 4.9 g/s SE injectors, D&D Fat Cat 2into1 QB, Rivera Pro Clutch, Tuned with a TSII+, Never been dynoed
George W. Bush - lowered taxes and likes killing terrorists - my kinda guy
Obama - raised taxes and likes reading terrorists their rights -
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12-17-2007, 09:27 AM
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#6 (permalink)
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Obsolete Rider
Join Date: Jun 2005
Location: NC
Posts: 1,674
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Wait for the experts to give you good info.
For what it is worth, I would think you would want to change cams.
If you are going to install the 88" jugs and pistons, then you'd have the
opportunity to set up whatever compression ratio you wanted along
with squish. With this being open book, you'd want to pick a cam that
suited the compression ratio you were building. I do suspect that porting
would be optional if you were not going "all out".
__________________
1998 Obsolete EVO Springer
Now boasting 85 cu in (well, almost)
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12-17-2007, 09:32 AM
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#7 (permalink)
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Iron Will
Join Date: Dec 2003
Location: Munnsville NY
Posts: 4,361
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88" Xl
Quote:
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Originally Posted by Pikeslayer
So you guys are saying without any head work or cams, I could expect some descent gains with just the displacement increase.
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Cams, heads, ignition, exhaust will all be instrurmental in the outcome.
Scott
__________________
"If a street Harley doesn't have torque, how much horsepower it makes, simply does not matter."
"Treat your dogs with respect, keep your traps oiled and checked, and Beechnut is the tabacco to chew." The Renn, date unknown.
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12-17-2007, 06:14 PM
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#8 (permalink)
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ΔΟΟΦ
Join Date: May 2004
Location: NW Florida
Posts: 1,176
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Here's a writeup on a another site detailing this conversion.
__________________
Tim
Obsolete 06 FLHTC
Ridden in the rain
Scratched Tour-pak
Additional parts that contribute to a smile
"The things that will destroy America are prosperity-at-any-price, peace-at-any-price, safety-first instead of duty-first, the love of soft living, and the get-rich-quick theory of life." --Theodore Roosevelt
Last edited by TalonChief : 12-17-2007 at 06:19 PM.
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