hI!

Can i use new standard lifters on my actual cam with 20 houres of use?

I set up on my A12 block with a12 pushrods a A14 Gfu cylinder head, can i use the A12 pushroads?

Thanks


Luis

hI!

i taken measures on camshaft with more precision, and the cams are ok, but some have some shadows and one have a litle material dent.

Please give me your opinion? Its a big deal? or take the risk and assembly it with this material dent on cam? The lifter will make some pressure in all cam and will toutch the dent too, im afraid the lifter will increase the cam dent?

Thanks

Luis

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What kind of lifters do you use with a longer cam duration?

The first time i used Nissan Part Number: 13231-78201 720 Pickup 4 Cyl 2.2L Diesel, 4 Cyl 2.5L Diesel
SD22, SD25, but the first lifter by side of distribuition must be shave because touch slightly the camshaft.

What do you recomend used standard ones? or 13231-78201 have larger head on them, prevents uneven wear on camshaft lobs.

My camshaft has wear too. i need regring again another one...................

i HAVE an A15 h50

This time I must buy a elecrical fuel pump, i saw 17010-A7600 17010-A7601 and this model is for Carburetor vehicles requiring a low pressure pump and to replace factory electric or mechanical pumps
1.3L/min @ 29kPa/4.2psi

Mikuni recommended fuel pressure is 2.84 - 4.98 psi


I think its not need a regulator, please let me know


and i will order the springs from Iskenderian to avoid any doubts

Im counting with your advices


Thanks

Luis

I have contact the Iskenderian, and they inform me to verify the coil biding, perhaps it is the problem to cause the wear on the rocker arms, and in other hand acording with Dave and Tom i will verify the oil circuit on cylinder head.

Im afraid the coil biding makes serious problems on camshaft.

Aparently i cant see any wear its smooth on lobes no scratches. I dont know if gains some wear..... f.......

one lobe appears lack of material.

Thanks


Luis

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Hi!

Im in trouble!!!!
GX valve springs will not support the cam i have. The cam i have is near 11mm valve lift

sTANDARD a14 Springs will fit? I need help!!!

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Hi!

Only on November i will make the oil head test im far from car....

I read on springs specifications:

"This item is worthy of middle class specifications enough.(To about 8,000 rpm spec)
They are Valve Springs popular very much in JDM.
The double valve springs control Valve Surging at the time of high rpms.
It supports; cam lift - 6.5mm, valve lift - 9.4mm"


And the cam lift is 0.298" or 7,57mm that is i saw on paper..


Cam lift 7.57mm is biger than the spring can suport?????

Please let me know

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I hope not assembly the springs in wrong way?????

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These are the itens i used, and i kept the standard spring lock retainer

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Thanks for your replies.

I have no oportunity to make the test on oil flow because i took of the engine of, when i have the oportunity i will assembly a starter and test the oil passage. Now im geting ideias and knowldeges from you with experience and trouble solutions.

The valve stem its ok no damgages, i notice the valve springs are stacking solid at full lift, the engine is very stuck it is dificult to move it with a wrench on cranckshaft pulley, but when i removed the rocker arns, the engine moves slowly with no prison.

Thanks Again

Luis