Engine Rebuild
09-15-2014, 02:45 PM
#12
UK Moderator
Still, if people have figured to how to do successful rebuilds, that's great news, especially as my engine is on 130k now.
09-16-2014, 01:08 AM
#13
Registered User
^ The nice thing about a rebuild is you should have some warranty on it I guess and also its basically like starting again with 0 miles on the clock.
If you buy a used engine its a roll of the dice how long it will last and what sort of condition its in, although it is the cheapest and quickest way to get back up and running..
If you buy a used engine its a roll of the dice how long it will last and what sort of condition its in, although it is the cheapest and quickest way to get back up and running..
09-16-2014, 01:58 AM
#14
Have any of them gone into S2000s and done 70,000 miles (which is what I've done on my replacement engine)?
09-17-2014, 02:16 PM
#15
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Just finished a rebuild on my F20c had it on the dyno today made 250bhp 175 foot pounds of torque on a Dynodynamics
Engine spec
Dry slieved block
Cp 12.5-1 pistons standard 87mm bore
Skunk2 rods
Acl bearings
Honda head gasket
No head mods standard cams etc
OBX ITB's
Omex 600 Ecu
Struggled with high intake temps today due to not having a airbox for the ITB's a lot more left in it but went conservative with the map till I get the airbox made.
I got the dry liners done in the uk it's well worth building the engines you don't know what your buying with a second hand engine
Engine spec
Dry slieved block
Cp 12.5-1 pistons standard 87mm bore
Skunk2 rods
Acl bearings
Honda head gasket
No head mods standard cams etc
OBX ITB's
Omex 600 Ecu
Struggled with high intake temps today due to not having a airbox for the ITB's a lot more left in it but went conservative with the map till I get the airbox made.
I got the dry liners done in the uk it's well worth building the engines you don't know what your buying with a second hand engine
09-17-2014, 03:18 PM
#17
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I've done 3 myself. In my spare room. 2 sold. One with a mate. In my spare room. Got one that needs doing actually just keeping a spare 
the pain is the crank. They don't like to be reground.
You could also prevent anything going wrong with the bottom end by doing it in the bay. Head off sump off and replace rings and bearings. I always ponder should I do it just to have peace of mind over a weekend.
the pain is the crank. They don't like to be reground.You could also prevent anything going wrong with the bottom end by doing it in the bay. Head off sump off and replace rings and bearings. I always ponder should I do it just to have peace of mind over a weekend.
09-18-2014, 05:53 AM
#18
I've done 3 myself. In my spare room. 2 sold. One with a mate. In my spare room. Got one that needs doing actually just keeping a spare the pain is the crank. They don't like to be reground.
You could also prevent anything going wrong with the bottom end by doing it in the bay. Head off sump off and replace rings and bearings. I always ponder should I do it just to have peace of mind over a weekend.
the pain is the crank. They don't like to be reground.You could also prevent anything going wrong with the bottom end by doing it in the bay. Head off sump off and replace rings and bearings. I always ponder should I do it just to have peace of mind over a weekend.
I have also heard that one must be careful when re-honing bores and follow the Honda destruction manual to the letter.
Presuming one measures the journals incredibly accurately, a 'light' rebuild should theoretically be possible.
But anecdotal evidence would suggest things aren't always done like that. Or scored cranks are re-used...
09-18-2014, 06:10 AM
#19
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I've done 3 myself. In my spare room. 2 sold. One with a mate. In my spare room. Got one that needs doing actually just keeping a spare the pain is the crank. They don't like to be reground.
You could also prevent anything going wrong with the bottom end by doing it in the bay. Head off sump off and replace rings and bearings. I always ponder should I do it just to have peace of mind over a weekend.
the pain is the crank. They don't like to be reground.You could also prevent anything going wrong with the bottom end by doing it in the bay. Head off sump off and replace rings and bearings. I always ponder should I do it just to have peace of mind over a weekend.
I would NEVER contemplate removing any material from a OEM Crank.. If the crank is damaged in anyway bite the bullet and get a new one or a very good condition 2nd hand one.
09-18-2014, 09:26 AM
#20
Ha listen to all this rebuild theory.
You'll never run the same factory tolerances, incredulously accurate is what's required. Younger 2nd hand low miler engines are the way
There'll always be a plug for rebuilds. They don't normally end up that well - it's engine bingo for a F20C. Why not start a poll - "would you buy one".
You'll never run the same factory tolerances, incredulously accurate is what's required. Younger 2nd hand low miler engines are the way
There'll always be a plug for rebuilds. They don't normally end up that well - it's engine bingo for a F20C. Why not start a poll - "would you buy one".