Hone Block

Author
Discussion

Tuskaa 7

Original Poster:

156 posts

228 months

Tuesday 10th July 2007
quotequote all
Can someone briefly explain what this means?

custardkid

2,514 posts

229 months

Tuesday 10th July 2007
quotequote all
guessing it means the same as skimming, take abit off the top of the block to make sure its flat

custard

yzf1070

814 posts

236 months

Tuesday 10th July 2007
quotequote all
Its actually the cylinder bore that is honed and its the process of making the clinder bore as symetrical as possible plus creating the criss cross score pattern in the cylinder bore walls. A sophisticated piece of machinery will hone a block at a given operating temperature which allows tighter ring to bore clearances providing better compression and slight power increases.....in the race world.

G smile


Tuskaa 7

Original Poster:

156 posts

228 months

Tuesday 10th July 2007
quotequote all
Thanks guys.

Graham - looking at your very interesting profile in terms of engine work, would you mind me contacting you via email with a couple of quick questions?


Buffoon

879 posts

209 months

Wednesday 11th July 2007
quotequote all
yzf1070 said:
Its actually the cylinder bore that is honed and its the process of making the clinder bore as symetrical as possible plus creating the criss cross score pattern in the cylinder bore walls. A sophisticated piece of machinery will hone a block at a given operating temperature which allows tighter ring to bore clearances providing better compression and slight power increases.....in the race world.

G smile

Agree with above. Honed cylinders require new rings. The only clearances associated with this are the Piston / cylinder clearance - which should not be an issue for honing, pistons are only normaly replaced through wear or after a re-bore. and ring gap. Honing will increase the ring gap hence the requirement for new rings. If the honing is done properly and the correct rings used there will be no ring to cylinder clearance, optimal ring gap and maximum compression. Rings should initially be staggered so that gaps are not in line with each other for optimum wear and compression characteristics.

Tuskaa 7

Original Poster:

156 posts

228 months

Wednesday 11th July 2007
quotequote all
Would/could this relate to any issues with a dropped liner sometime after the Hone and rebuild was completed?

yzf1070

814 posts

236 months

Wednesday 11th July 2007
quotequote all
Tuskaa 7 said:
Thanks guys.

Graham - looking at your very interesting profile in terms of engine work, would you mind me contacting you via email with a couple of quick questions?
Sure no probs...

Regards

G smile