TJ-Flames : what do u mean by points limitation?


**sorry, my english is not very good.

racetech : No,the engine is not struggling to reach 6800rpm,last weekend i tried,it can make to 7000rpm,but no point because there's no 'power' above 6800rpm.is it valve bounce?

forgot to mention that i'm still using a stock distributor and a stock H89 head except for the dual springs.

i agree with what ddgonzal have stated..

thanks.

have no idea what piston is that but i dont think its a stock A14's piston,looking from the piston's dish..

below is the pictures of the piston from my A14..hth







and its pretty look like mine (after the piston been shaved)

thanks a lot guys..really appreciate this

i'll try to remove the choke and put slightly bigger mains for it..

thanks again

how to be sure that the cam timing is in the perfect order?any other symptom to detect this?



thanks.

silvia-specr,this is what under my twin Mikuni 40PHH right now:-

Main Air Jet #210
Main Jet #120
Idle Jet #57
Pump jet #40
Choke #32

Is the combination is not matched with the engine's need?

ROConnor,i'm not sure about that..the engine is fitted with the standard a14 ac fuel pump..is there any possibilities that the fuel pump cant keep up?should i change to electronic fuel pump?

but i've read that a14 ac pump (2.8 - 3.8psi) will working fine with this carbies and even for a hot street A14..

Thanks.

thanks ddgonzal for the infos.

my rebuild a14 only can rev up to 6800rpm (gear on),

actually i'm expecting at least 7500rpm when this engine is fitted with double valve spring,twin Mikuni 40PHH and fully balanced internal parts.



What am i suppose to do? and where should i start to check the failure (if there any) that stoping it from revving more that it should?

or is it normal regarding of the engine's performance?

Thanks.

Guys,as per topic..i wonder what is the maximum RPMs for Nissan A Series standard/stock engines? What is the Max RPMs with free gear and with gear engaged?
(i've looking around but couldn't find any info in the net )


A12 = ? rpm

A14 = ? rpm

A15 = ? rpm


Many Thanks.

my questions about this mod..

if we can put GA16DE in our datto..what gearbox that suitable for it?can we still use our F5W60A or F5W60L to be fit in with this engine?

thanks.