Anything else while heads are off?
#1
Anything else while heads are off?
So I have a TC88 with an Andrews 37H and a 4 degree offset, a heavy breather, and a Fat Cat installed now and the heads are going out to get ported and milled down to 78CC to up my compression to 9.54:1, 8.99:1 corrected. I have higher flowing injectors with the corrected angle to install when reassembled but while the heads are off are there any suggestions for other work? Engine has 47K on it and I've thought about just getting the 95CI bore and new pistons done but it just sounds like that stage would just add maybe 7-8% and eat up a lot of gas. It doesn't seem worth the $600 for boring, pistons, and compression releases.
#2
So I have a TC88 with an Andrews 37H and a 4 degree offset, a heavy breather, and a Fat Cat installed now and the heads are going out to get ported and milled down to 78CC to up my compression to 9.54:1, 8.99:1 corrected. I have higher flowing injectors with the corrected angle to install when reassembled but while the heads are off are there any suggestions for other work? Engine has 47K on it and I've thought about just getting the 95CI bore and new pistons done but it just sounds like that stage would just add maybe 7-8% and eat up a lot of gas. It doesn't seem worth the $600 for boring, pistons, and compression releases.
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Jay Guild (12-05-2016)
#3
Thanks, djl. I've been wondering about a measurement that is on the compression calculator. They state that the stock 88 and 96 head gasket bore is 3.850 and that the big bores are 3.910. What is this measurement and is it just inherent to boring the cylinder to increase the gasket bore? Is this just the inner diameter of the gasket itself?
Last edited by Jay Guild; 12-05-2016 at 01:58 PM.
#4
Thanks, djl. I've been wondering about a measurement that is on the compression calculator. They state that the stock 88 and 96 head gasket bore is 3.850 and that the big bores are 3.910. What is this measurement and is it just inherent to boring the cylinder to increase the gasket bore? Is this just the inner diameter of the gasket itself?
#6
#7
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#8
#10
Actually once bored to 98", with the proper compression, you will traditionally/historically increase fuel economy
Our Stage I Heads, with our 98" piston/boring/complete Cometic gasket set, ring end gaps are set and installed on the pistons is only $1300.00.
Bolt it together and tune/ride/smile.
Scott
Our Stage I Heads, with our 98" piston/boring/complete Cometic gasket set, ring end gaps are set and installed on the pistons is only $1300.00.
Bolt it together and tune/ride/smile.
Scott
__________________
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.
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.