om 617 NA convert to turbo
om 617 NA convert to turbo
12-06-2011, 02:05 AM
#1
hi everyone, i'm new here, does any one know what is the difference between 617A and 617 internally ? i mean the block itself, crank, connecting rods ? as far as i know there's the difference between pistons , camshaft and oil pump. thing is i want to put 617a internals into 617, is it possible ?
12-06-2011, 12:30 PM
#2
heads are the same except the turbo's had sodium filled exhaust valves
1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
12-06-2011, 12:30 PM #2The 617a has piston oil squirters and a hardened crank and beefier rods and pistons the block is the same but you have to do some machining to fit the oil squirters
heads are the same except the turbo's had sodium filled exhaust valves
1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
12-06-2011, 12:51 PM
#3
This post was last modified: 12-06-2011, 12:52 PM by sassparilla_kid.
-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
12-06-2011, 12:51 PM #3Hmmph, I didn't realise the exhaust valves were sodium filled! Good to know
-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
12-06-2011, 05:53 PM
#5
(12-06-2011, 05:26 PM)w123fan so it's possible to do it after all
It will be a lot cheaper to find a different engine (617a) then to change the internals. I dodn't believe the crankcase is the same, check out the oil pump drive! Without the piston cooling, they just don't last! So you need everything from a turbo-engine to make a turbo-engine(?). That makes sense. Sure, you can use a 'SST' set up and upgrade your engine with the looks of a turbo engine, but don't expect anything more.
(12-06-2011, 05:26 PM)w123fan so it's possible to do it after all
It will be a lot cheaper to find a different engine (617a) then to change the internals. I dodn't believe the crankcase is the same, check out the oil pump drive! Without the piston cooling, they just don't last! So you need everything from a turbo-engine to make a turbo-engine(?). That makes sense. Sure, you can use a 'SST' set up and upgrade your engine with the looks of a turbo engine, but don't expect anything more.
12-07-2011, 02:20 AM
#6
i'm not able to change whole engine, because according to the my country law engine would be too powerful, and it's illegal, thats why i want to change all the internals, to keep original engine number. i'm planing to run 2.47 diff, so i will need more power, but now i must find 617a for the start.
12-07-2011, 01:38 PM
#7
(12-06-2011, 12:30 PM)willbhere4u The 617a has piston oil squirters and a hardened crank and beefier rods and pistons the block is the same but you have to do some machining to fit the oil squirters
heads are the same except the turbo's had sodium filled exhaust valves
I'm sorry, the prechambers are bigger and have a round shaped tip, the camshaft is not the same too.
It wouldn't surprise me if there are more differences
(12-06-2011, 12:30 PM)willbhere4u The 617a has piston oil squirters and a hardened crank and beefier rods and pistons the block is the same but you have to do some machining to fit the oil squirters
heads are the same except the turbo's had sodium filled exhaust valves
I'm sorry, the prechambers are bigger and have a round shaped tip, the camshaft is not the same too.
It wouldn't surprise me if there are more differences
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