DY3 engine block suitable for 2347cc?
- Thread starter Loudel
- Start date
citroenthusiast
Active member
DS19 is a long stroke motor, which is completely different from the 2347. Long stroke motors have three main bearings. The 2347 is a five-main bearing motor, similar to the DS21 and ID19.
DoubleChevron
Real cars have hydraulics
DY3 is a short stroke from the late 60's, early 70's. You shoudl be able to fit a DS23 piston/liner set. I'll leave that to the experts to detail 
(me, I'd like to rebuild one to 2.5 or 2.6 litres using CX parts!).
Its probably not a DS19, rather a DS20, or "DSpecial/Dsuper".
(me, I'd like to rebuild one to 2.5 or 2.6 litres using CX parts!).Its probably not a DS19, rather a DS20, or "DSpecial/Dsuper".
DY3 Block will only take 2.1 litre liners and pistons that is the upgrade recommended, not sure but would guess 2.3 litre liners would need some engineering of the blockDY3 is a short stroke from the late 60's, early 70's. You shoudl be able to fit a DS23 piston/liner set. I'll leave that to the experts to detail
Its probably not a DS19, rather a DS20, or "DSpecial/Dsuper".
faulksy
Active member
Manual 814 suggests that the 1985cc DY3 engine was fitted to D Specials from late 1972 on. You should be able to fit the 2175cc liners as suggested above but not the 2347cc ones.
Part of the reason 2.3L DX4&5 engines are more prone to overheating is that the pistons and liners have a larger diameter but the block is the same size so the volume of the water jacket is reduced.
1985cc pistons are 86mm, 2175cc pistons are 90mm and 2347cc pistons are 93.5mm dia.
Part of the reason 2.3L DX4&5 engines are more prone to overheating is that the pistons and liners have a larger diameter but the block is the same size so the volume of the water jacket is reduced.
1985cc pistons are 86mm, 2175cc pistons are 90mm and 2347cc pistons are 93.5mm dia.
Buttercup
Well-known member
It was headed DY3, the misleading bit was the info of "old" DS19.
I would expect that most of us (except Gerry) would call longstroke 3 bearing as old, and shortstroke 5 bearing as not so old.
I acknowledge that there are those that consider the D era as "recent".
Similarly I get a bit huffy when someone refers to my round light Dees as IDs.
I recently received a gift of a Citroen front beam axle with hubs, steering arms and quarter elyptic springs...... reputedly to be 1921.
I guess thats "old"?
Buttercup
Well-known member
Oooohhhh CX..... waaaaay toooo modern!
DoubleChevron
Real cars have hydraulics
He says its a DY3 though
So "old" is early 70s! I keep thinking of the CX as "the new car" ..... Even though we have owned it for 25years now!
Buttercup
Well-known member
Without a doubt!
Roger Wilkinson
BVH
Mate, you're just getting started ...
Roger
Roger
Buttercup
Well-known member
Unlike us Roger, we're just about finished?
Roger Wilkinson
BVH
It was all over for me long ago.
But of course it is never all over.
Roger
But of course it is never all over.
Roger
gerrypro
1000+ Posts
The Fat Lady hasn't sung yet!