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vectradam

280RR low compression head insert

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Hi

 

Fitted a low compression head insert to my 2018  280 RR to hopefully soften it a bit.  are there any carb adjustments or anything else that i should do when changing to this low comp insert.

 

Also, has anyone found a suitable replacement for the awful radiator filler plugs that round off so easily,

 

Many thanks

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Can you retard the ignition on these?   If so then retard the ignition by about 4mm (not 4 degrees).  

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If you visit Steve Saunders website - saunders extreme, you can find all the parts manuals. look at the 2020 TRRS and you will find revised radiator cap. Hexagon proud of the cap body. Part number 13004TR100 £13.45

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i now realise that you can also get a thicker head gasket / spacer. can you fit this as well as the low compression head insert or is it one or the other ?

 

Also, i generally ride everything in 2nd or 3rd gear. What would i gain by going one tooth down on the front sprocket that i couldnt achieve by just riding in 1st or 2nd ?

 

thanks very much

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Quote...  Also, i generally ride everything in 2nd or 3rd gear. What would i gain by going one tooth down on the front sprocket that i couldnt achieve by just riding in 1st or 2nd ?

Well exactly, if you went for 1 tooth smaller , 4th gear might become useable.   So you would have 4 useable gears..

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apologies, i wasn't very clear - there is some info on dropping a tooth on the front sprocket to tame them a bit but im unsure how that would be different from riding in a gear lower

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If you ride in first and its too quick fit a 9 tooth otherwise just select a lower gear. My 280 will pull 4th on a hill but its not detuned so 4th is usable. 

Low comp head and a head spacer may be too soft as the motor won't have the compression to pull higher gears

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Head spacer or low comp head,not both unless you want a very gutless bike

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