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Modified CRF12-2008
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nice work blee,did you change the timing?
how about the novarossi carb?did yiu see any add in performance? |
Originally Posted by GREGORY!
(Post 5313678)
nice work blee,did you change the timing?
Originally Posted by GREGORY!
(Post 5313678)
how about the novarossi carb?did yiu see any add in performance?
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[quote=blee;5314044]Thank you......... I modified the intake (crankshaft) a little bit; however I don't think timing would change. For my experience, change timing is not a major element to upgrade the performance. I have done a lot of other detail work in order to enhance the performance but you could not tell from the photos.
i have some questions for the 2008 crf. do you have the timings for this engine?how much diameter is the hole in the crank? in the old one was 6mm its the same and in this engine? how much better the engine is after the mods?pros-cons? thanks! |
Originally Posted by blee
(Post 5314044)
Thank you......... I modified the intake (crankshaft) a little bit; however I don't think timing would change. For my experience, change timing is not a major element to upgrade the performance. I have done a lot of other detail work in order to enhance the performance but you could not tell from the photos.
The engine would be much easier to tuning after applied Nova carb. |
engine timing is the most important part when it comes to engine performance
not pretty little sleeve cuts also the piston and sleeve fit is another important fact. but crank timing is the most important factor when determining engine power!!!!!!!!! the power comes from the crank :tire: other then that nice work:) |
Originally Posted by G87z
(Post 5314293)
Does the crankshaft not have the red puddy in it? Or did you remove it?
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Originally Posted by HoboShop
(Post 5314477)
engine timing is the most important part when it comes to engine performance
not pretty little sleeve cuts also the piston and sleeve fit is another important fact. but crank timing is the most important factor when determining engine power!!!!!!!!! the power comes from the crank :tire: other then that nice work:) Timing has been determined on the engine blue print........ therefore timing is not a major element during modification. You may have a try and would understand very well. ;) |
Originally Posted by G87z
(Post 5314293)
Does the crankshaft not have the red puddy in it? Or did you remove it?
Original crankshaft has no red silicon insert. Since the intake is dome shape, I didn't add the silicon in neither. |
does anyone have the timings for this engine?
someone must have them. the transfer and exhaust are near the picco evo 3? |
Originally Posted by blee
(Post 5314790)
Timing has been determined on the engine blue print........ therefore timing is not a major element during modification. You may have a try and would understand very well. ;)
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Originally Posted by Roelof
(Post 5316735)
The engines made for the consumers (normal market) do not have the specs as the factory drivers have and so there is always room to change the timing. And from my experience any tiny change in the cranktiming will do more than fancy cuts and polishing.....
knowing the correct way of measuring is more important:D:sneaky: Sometime I gone very far on timming and still benefit but down side i experienced was engine tunning issue as well as clutch, tune pipe and gearing. fancy cuts on sleeve are just fancy cuts... and polishing it......is a joke:lol: |
When i modify an engine I usually change both sleeve and crank timing, the results can be quite dramatic if the changes are done correctly....
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Originally Posted by Maximo
(Post 5334150)
When i modify an engine I usually change both sleeve and crank timing, the results can be quite dramatic if the changes are done correctly....
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