I'll be increasing the deck height on a B18c1 as soon as I receive my short block.
It will be an increase of 1.75" total. I have all the mechanics worked out I just need some help with the cam and ignition timing adjustments. I just read the post of the guy who milled way to much off his head and decided I should find out NOW what i need to do. I like to be prepared. Any info or experiences will be much appreciated.
Sorry no one in the tech could help me.

 

Can no one tell me the rates of advancement for the cams and ignition I'm going to be looking for?

 

I guess no body knows.

 

wait...........you cut 1.75'' off of what?


Rob

 

Oops my bad. Adding 1.75"

 

How are you adding to your deck height?

Rob

 

I was going to do it to my B20 originally but then I'd have to worry about the oiling and whatnot in the block. I would much rather have the oil squirters cooling those long *** rods. I'm using an Al deckplate with copper o-rings for the water lines threw the block. I'm trying to find someone to make some extended sleeves for me. GE hasn't answered me yet.

 

https://honda-tech.com/zerothread?id=211054

check that out

 

Take the height increase and divide by the radius of a cam gear (2 inches). Multiply by 180/ pi. Multiply by 2. ABout 100.26 degrees for a 1.75 inch deck height increase. Thats the change in cam timing in degrees of crank angle if you were using a stock timing belt. Somehow though I would think for that much increase in block height you aren't going to use a stock timing belt.

I've not sure what the gear pitch is on a cam gear. Let me check a stock one. If it isn't evenly divisible into 100 degrees you'll need adjustable cam gears.

OK there are 34 teeth on a cam gear so 10.59 degrees per tooth which doesn't divide into 50.13 degrees evenly. Assuming you adjust the timing belt by 5 teeth on the cam gear that leaves you 2.82 degrees cam angle to make up for with the cam gears.


[Modified by filetofit, 8:16 PM 10/17/2002]


[Modified by filetofit, 8:21 PM 10/17/2002]

 

Thanks for a clear answer finally. I've seen that link already I wanted the core math.


[Modified by tzsir, 2:22 PM 10/17/2002]