beeto Posted October 3, 2017 Share Posted October 3, 2017 So it is engine build time I have a L28 with 3 x 40 DCOE, and will be rebuilding/refurbishing the engine. What type of Cam grind should i be looking at? I was thinking of getting a MSA Cam Kit, but thought i may as well just regrind what i have. General Street use, not racing. Cheers! Quote Link to comment Share on other sites More sharing options...
Ereschkigal Posted October 4, 2017 Share Posted October 4, 2017 I face the same question and the only tip I can give you which I found in the forums: The springs in the cam kit are too stiff for stage 1 and 2. Quote Link to comment Share on other sites More sharing options...
OLDZZZ Posted October 4, 2017 Share Posted October 4, 2017 Talk to Dave Rebello. He should have a cam kit that will meet your needs. Quote Link to comment Share on other sites More sharing options...
E. G. Smith Posted October 4, 2017 Share Posted October 4, 2017 (edited) 13 hours ago, Ereschkigal said: I face the same question and the only tip I can give you which I found in the forums: The springs in the cam kit are too stiff for stage 1 and 2. If he went to a larger venturi would that help, or are the kits that MSA sell inappropriately sprung, if that's a word? I face the same issue going forward on my rig. N42 is the most widely regarded cylinder head for enhancing performance but many "L SERIES" builders have had success with other cylinder heads, i.e. P90, E88,E34,etc. From the reading I have done it seems to be necessary to figure the flow, and combustion characteristics of the different heads then add in several other factors. It would be nice if tuning components were plug and play but some parts work better when tuned finely. I have spoken with several DATSUN SPECIALISTS over the years including those who raced on the SCCA circuit and always got varying opinions. When I am ready to put mine together I will consult the builder, tell him what I have and assess in theory what type of HP will I have. A good acquaintance once said never to go higher than a Stage 2 cam, but a builder in Austrailia can build a track engine that will tow all your race gear to the track! Go figure. So do your own science and it will probably not turn out to be plug and play. But a finely tuned "L" engine can get the job done. Edited October 4, 2017 by E. G. Smith Additional Quote Link to comment Share on other sites More sharing options...
Ereschkigal Posted October 5, 2017 Share Posted October 5, 2017 I read in the other forum, MSA uses the same springs in their kit for stage 1 to stage 7 and the wear on the cams is too high for stage 1 and 2 cams. The tip was to use 300zx springs from the NA engines 84-87 for these lower stage cams. I can't guarantee for the rightness of the information but I think to ask Rebello for a kit would be the better alternative. Quote Link to comment Share on other sites More sharing options...
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