Will 80ci parts fit in a 74ci case?
#1
02-17-2015, 12:10 PM
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Location: Toledo
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Will 80ci parts fit in a 74ci case?
I have a can't find giving up clunk in my 1976 74ci shovelhead engine.
I have found on Craigslist an 80ci full crank, connecting rods, pistons, cylinders, cam and*oil*pump.*
Will they fit in my cases or are 74ci and 80ci cases (lower) different?
Also, my engine barely fits height wise now. Will an 80ci cylinder be taller?
I have found on Craigslist an 80ci full crank, connecting rods, pistons, cylinders, cam and*oil*pump.*
Will they fit in my cases or are 74ci and 80ci cases (lower) different?
Also, my engine barely fits height wise now. Will an 80ci cylinder be taller?
#2
02-17-2015, 02:06 PM
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The crank and cyls will bolt on, but just check the clearence for the crankpin nut on the left case half, and without a doubt the proper cam to mate to the pinion gear.
You'll also want to check pinion shaft to race clearence and use the appropiate bearing "color".
You may also need a different cam cover.
No taller.
Your going to need specialty tools to pull the wheels into the left side, and also to set the bearing end play.
Scott
You'll also want to check pinion shaft to race clearence and use the appropiate bearing "color".
You may also need a different cam cover.
No taller.
Your going to need specialty tools to pull the wheels into the left side, and also to set the bearing end play.
Scott
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HILLSIDE MOTORCYCLE & MACHINE, INC.
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HILLSIDE MOTORCYCLE & MACHINE, INC.
HARLEY-DAVIDSON SPEED & SERVICE CENTER
5225 SOUTH MAIN ST., MUNNSVILLE, N.Y. 13409
Sales/Support 315-495-6650
www.hillsidecycle.com
Walk-in Retail Showroom
Complete H-D Machine Shop
Case & cylinder boring
Complete Cylinder Head Shop
High-Performance Engine Kits
Crank Rebuilding
Direct Link & PowerVision Tuning
Goodson HD Tooling Manufacturer
Maxton Mile World Record
4500 sq ft. facility
OVER 35 YEARS OF H-D ENGINE BUILDING.
See us on Facebook.
Last edited by Hillsidecycle.com; 02-17-2015 at 02:13 PM.
#3
02-17-2015, 07:01 PM
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Wow! Thanks Scott!
I have rebuilt the bottom but did keep the crank assembled.
Had the cylinders bored by a local motorcycle race shop and they may have bored the front to cylinder wrong diameter. Quick wear and still had the clunk and run rough when heats up.
Lots of work and money and still clunk. Would be awesome to get the 80 to work.
Thank you so much!
I have rebuilt the bottom but did keep the crank assembled.
Had the cylinders bored by a local motorcycle race shop and they may have bored the front to cylinder wrong diameter. Quick wear and still had the clunk and run rough when heats up.
Lots of work and money and still clunk. Would be awesome to get the 80 to work.
Thank you so much!
#4
02-18-2015, 06:13 AM
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