Apart from the mounts being cast on different positions on the head what are the other differences between an 850 and 900 head?
Bigger valves on 900/better porting etc?
I am aware the cams are different with 900 ones having a phase sensor
850 v 900 cylinder head differences?
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ron850
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850 v 900 cylinder head differences?
'97 Red/Black UK bike, R1 14b front end, Thunderace rear, zx10r shock, adjustable dogbones, std motor on TDMR40's, Ignitech prog ign, Gibson cans
TDM900 engine build imminent
TDM900 engine build imminent
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sanddune51
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Re: 850 v 900 cylinder head differences?
The valves are definitely the same as the later revised Trx ones. Not certain of internal differences but I would expect the porting to be the same as the Trx and 850Tdm. I believe the external differences are well understood and documented on this forum.
Mark.
Mark.
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Rod.s
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Re: 850 v 900 cylinder head differences?
The inlet ports are scolloped to allow for the injector spray patternsanddune51 wrote:The valves are definitely the same as the later revised Trx ones. Not certain of internal differences but I would expect the porting to be the same as the Trx and 850Tdm. I believe the external differences are well understood and documented on this forum.
Mark.
and the external casting is different…plus…..mmmmmIf it's not made in China, it's a fake!
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Killerwhale
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Re: 850 v 900 cylinder head differences?
And the TRX enjun is a bitch to carry, whilst the 900 is much lighter. I´ve tried bothRod.s wrote:The inlet ports are scolloped to allow for the injector spray patternsanddune51 wrote:The valves are definitely the same as the later revised Trx ones. Not certain of internal differences but I would expect the porting to be the same as the Trx and 850Tdm. I believe the external differences are well understood and documented on this forum.
Mark.
