Paul Thompson 'Hooligan'
Admin
I'm looking for a recommendation for an engine honing service, preferably based in the south.
Any suggestions?
Any suggestions?
Honing requirement.. UK
- Thread starter p thompson
- Start date
Make sure the shop that does the work is specifically set up to work on your specific engine--that means having the proper torque plates in stock.
Torque plates are made of heavy steel or aluminum, and mirror the bolt pattern of the cylinder head. When the heads are bolted to the block and torqued, the shape of the block is subtly altered. The plates mimic that effect. If you just bore a block free-standing, the holes are round until you bolt the heads on, at which point they become slightly un-round. This can lead to sealing problems down the road, ring fatigue, oil burning, loss of compression, and premature male pattern baldness. :laugh:
Boring the block with torque plates installed means that the hole is round, then when the plate is unbolted and removed, it goes un-round, then when the head is attached, the hole goes round again.
Torque plates are bloody expensive--on the order of $500 each or so, or thereabouts (there are aluminum ones on E-bay at the moment for $295), so not every engine shop will have them, particularly in a land where American V8s are rather thin on the ground.
Torque plates are made of heavy steel or aluminum, and mirror the bolt pattern of the cylinder head. When the heads are bolted to the block and torqued, the shape of the block is subtly altered. The plates mimic that effect. If you just bore a block free-standing, the holes are round until you bolt the heads on, at which point they become slightly un-round. This can lead to sealing problems down the road, ring fatigue, oil burning, loss of compression, and premature male pattern baldness. :laugh:
Boring the block with torque plates installed means that the hole is round, then when the plate is unbolted and removed, it goes un-round, then when the head is attached, the hole goes round again.
Torque plates are bloody expensive--on the order of $500 each or so, or thereabouts (there are aluminum ones on E-bay at the moment for $295), so not every engine shop will have them, particularly in a land where American V8s are rather thin on the ground.
Paul Thompson 'Hooligan'
Admin
Cheers for reply Mike -
Have got the torque plate, just looking for suitable machine shop that is familiar with requirement.
Have got the torque plate, just looking for suitable machine shop that is familiar with requirement.
Only joking Paul, but I just honed the bores in my old 1930's air compressor to get some oil retention and remove waviness in the bores. I got a hone made by Draper for £7.50, fits in a drill. Ok, the bores are only 2".
Mike, I learn several new things every day, today you are my teacher, but I already knew about the male pattern baldness:laugh:
Is the honing just for oil retention or does it actually finish size the bore?
Dave
Mike, I learn several new things every day, today you are my teacher, but I already knew about the male pattern baldness:laugh:
Is the honing just for oil retention or does it actually finish size the bore?
Dave
Paul,
we have torque plates AND Sunnen CV616, we are quite often down in the South Coast area if you'r not in any rush or can arrange a pallet collection.
Mike
we have torque plates AND Sunnen CV616, we are quite often down in the South Coast area if you'r not in any rush or can arrange a pallet collection.
Mike
Brett James-McCall
Moderator
BenchSound in Essex near me
