How can you tell the difference NA S4 and S5?
#2
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There is a round piece on the front iron, closer to the spark plug side, on the top, that is there on S5 NAs.
Also, the water temp sensor holes are different threads.
If the front cover is on and original, the area where the mop bolts on is different, id look for pics of that.
Spark plug locations are different.
Rotor housings have different printings on them, if you need to know, i can go look, but its dark outside right now.
Also, the water temp sensor holes are different threads.
If the front cover is on and original, the area where the mop bolts on is different, id look for pics of that.
Spark plug locations are different.
Rotor housings have different printings on them, if you need to know, i can go look, but its dark outside right now.
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#9
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Spark plug holes are in a different location!? I don't think so.... pictures coming.
Also, EGR passage on top of middle iron is solid and blocked off on the S5 engine, open or with EGR installed on S4.
S4 on left, S5 on right.
S4 on left, S5 on right.
Enjoy.
Also, EGR passage on top of middle iron is solid and blocked off on the S5 engine, open or with EGR installed on S4.
S4 on left, S5 on right.
S4 on left, S5 on right.
Enjoy.
#12
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Yes the the spark plug location is different on S5 than S4. I made this mistake a few years ago when i built a block.
Ran fine though.
IIRC the leading on S5 & S6 are lower a few mm, as stated above.
Micaheli- if you took them pics, take one straight on the plugs holes.
Ran fine though.
IIRC the leading on S5 & S6 are lower a few mm, as stated above.
Micaheli- if you took them pics, take one straight on the plugs holes.
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#15
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Yeah, I guess they are a tiny further apart... Guess I'm just retarded.
What would be the pitfalls of using S5 irons on an S4 ignition system because of this? I can't imagine this hurting your timing if its only a couple mm off. but I suppose if your port timing was a couple mm off, it COULD.... so...
What would be the pitfalls of using S5 irons on an S4 ignition system because of this? I can't imagine this hurting your timing if its only a couple mm off. but I suppose if your port timing was a couple mm off, it COULD.... so...
#21
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i don't think that n/a's had knock sensors.nor the threaded holes for it.it will only have it if the motor was rebuilt and used T2 housings.but if it's the propper housings,they never the threaded holes for the knock sensor.
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