difference between 3B and 7a engine ?

[fluk3]

anyone know what the difference is between s2 2.2 3b 20v turbo engine and a 2.3 20v 7A engine beyond the cams?

I think of rots, pistons, bearings, etc.

Best regards Christian Bogh

[GazzaG60]

cams
pistons
bore
head water rail.
head gasket
cam cover.

[fluk3]

hei

hmm so there is little difference between the 2
i would like to build a 450 to 500 hp engine so should just use block and top and camshafts


and must buy new rots, pistons, ect. anyway

[fluk3]

excuse my bad english google translate

[spink]

exhaust valves also

[LHD_Kid]

hmm so there is little difference between the 2
i would like to build a 450 to 500 hp engine so should just use block and top and camshafts


and must buy new rots, pistons, ect. anyway

I don't think I would be building a 450+BHP engine using standard 3B bearings either... even if they are same 7a and 3B

[nemilosu]

cylinder block, don't have the oil spray jet.

[fluk3]

yes of course the oil spray jet. and the exhaust valves.

so I can really only use the cams from the 7a engine

I also plan to buy bearings

[driftin jo]

There is a few more things , some of them obvious

oil pump
turbo oil return hole
oil filter assembly for oil feed to turbo and oil cooler
turbo water port in core plug hole
inlet manifold / throttle body
exhaust manifold / turbo / waste gate / downpipe
ecu / injectors / all engine sensors /

[Flat on my back]

.

cylinder block, don't have the oil spray jet.

Funny that, how come i removed 2 sets of 'oil squiters' from my 7A blocks?

Pics in my project thread...

P.S. Whats the oil pump difference?

[4WheelDrifter]

Cylinder block and head can be used with minor alterations. Cylinder bore is the only major obstacle, but custom/oversize pistons can overcome that.
Crank, sump, oil pump, oil squirters and all head contents are the same, apart from the cams and the exhaust valves' lack of sodium, as noted above.

I bought a 7A engine to plunder for many parts for my build. It can be a cheap way to get lots of good parts.

[Jamo]

cylinder block, don't have the oil spray jet.

deja vu, why do people keep saying that?

[kwlw]

deja vu, why do people keep saying that?

They say 7A, but maybe still keep old KV in mind .

Sau

[driftin jo]

Funny that, how come i removed 2 sets of 'oil squiters' from my 7A blocks?

Pics in my project thread...

P.S. Whats the oil pump difference?

Sorry ,yes the 7a and 3b have the same oil pump , it's the ABY that has the higher capacity pump .

[nemilosu]

Funny that, how come i removed 2 sets of 'oil squiters' from my 7A blocks?

Pics in my project thread...

P.S. Whats the oil pump difference?

yes. right. my bad.