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Old Oct 8, 2010 | 08:04 AM
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Originally Posted by Dick1964
I was going to ask the same question. Someone please explain in easy to understand terms.

I'll be getting head work as soon as it is too cold to ride. Maybe the Hurricane heads or just get mine worked over. What you think?
Simple terms?

The distance from the top of piston to the top of cylinder (at TDC).
If it's not at the top of the cylinder, it's less than optimal. A few thousands is acceptable. Some of the 07's were coming from the factory as far a .017 down the hole. You lose precious compression and are more vulnerable to ping.

You can shave down your cylinders to compensate.
 
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Old Oct 8, 2010 | 08:14 AM
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OK, that makes sense.
How do you take this measurement?

 
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Old Oct 8, 2010 | 09:24 AM
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OK, that makes sense.
How do you take this measurement?
Dick1964 had the perfect link for that.





Originally Posted by Dick1964
Found this old post. Checking deck height
 
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Old Oct 8, 2010 | 06:06 PM
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Originally Posted by Dick1964
I was going to ask the same question. Someone please explain in easy to understand terms.

I'll be getting head work as soon as it is too cold to ride. Maybe the Hurricane heads or just get mine worked over. What you think?
another thing to consider is....the hurricane head require a diff manifold. 4 bolts per head. the manifold retails for 339.00 then the 62 mm t/b.same price as the 58 but you already have the 58.
not that it all wouldn't be nice ...or help.just more to consider
 
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Old Oct 8, 2010 | 06:10 PM
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Originally Posted by strokerjlk
another thing to consider is....the hurricane head require a diff manifold. 4 bolts per head. the manifold retails for 339.00 then the 62 mm t/b.same price as the 58 but you already have the 58.
not that it all wouldn't be nice ...or help.just more to consider

The 62mm would cause loss of TBW, cruise, and an air filter for my bike.
 
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Old Oct 8, 2010 | 06:11 PM
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or just get mine worked over
A lot can be done to stock heads.
 
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Old Oct 8, 2010 | 07:28 PM
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Originally Posted by Deuces R Wild
The 62mm would cause loss of TBW, cruise, and an air filter for my bike.
good point I forgot there isnt a TBW version YET.
 
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Old Oct 8, 2010 | 08:44 PM
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Originally Posted by strokerjlk
good point I forgot there isnt a TBW version YET.

I think 62mm will be my future upgrade when it's TBW ready and I want to go to 131".
 
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Old Oct 9, 2010 | 12:46 PM
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Originally Posted by strokerjlk
they used roller "tappets" lifters.if your talking about roller rockers. no they didn't use them.do you think roller rockers are necessary? why?
I'm not an engine expert but I thought if they had it would help reduce friction and stress on the push rods. I wonder if this would be a good upgrade for this motor?
Thanks for any input.
 
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Old Oct 9, 2010 | 01:11 PM
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Originally Posted by SS ARMS
I'm not an engine expert but I thought if they had it would help reduce friction and stress on the push rods. I wonder if this would be a good upgrade for this motor?
Thanks for any input.

I have the same question, the 266E has a .658" lift; isn't the rule of thumb for using roller rockers anything over a .600" lift? On the other hand why wouldn't the MOCO include them if they thought they were needed? Reduce cost, reduce noise, or increase reliability?
 
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