solid lifters

[adzvtr]

what is involved in changing from hydrolic lifters to solids on a jp4 head and a rough costing. cheers in advance guys
adz

[raunchz]

new solid followers plus shims for them - then matching camshafts - these cams will invariably need pocketed pistons to cope with the lift @ tdc - uprated valve springs to cope with the increased lift.

Then as you're reving high I'd think AP rod bolts, or Wossner rods would be needed

[nickwillyhams]

new solid followers plus shims for them - then matching camshafts - these cams will invariably need pocketed pistons to cope with the lift @ tdc - uprated valve springs to cope with the increased lift.

Then as you're reving high I'd think AP rod bolts, or Wossner rods would be needed

you wouldnt need a certain cam for them!? you just shim the solid lifters up. the higher rated springs are only needed if the rev limit is going to be really high say over 8k, obv the pistons would need recesses if the lift was higher than standard to avoid them hitting. so in short to just change from hydralic to solid all you need is the lifters themselves and the required sized shims :) i looked into this myself and tbh the cost is rather high an its not worth the outlay unless the engines highly modded :y:

[raunchz]

but why fit solid lifters to a camshaft (for hydro's - eg PH3's) that drops off the power at say 7700rpm !? Bragging rights ?

EDIT- just saw the JP4 head bit - I'd get camshafts with lobe spacing for the JP4 head - the j4 spacing is slightly different but people have run jJ4 cams in JP4 head with no apparent problems - I would got for the JP4 spacing however when going to the hassle of solids, new cams etc.

[adzvtr]

will be having forged internals next year anyway, am just thinking ahead, as solid lifters would seem more viable and are stronger for future plans.

[yr51ocw]

you can not run camshafts designed for hydraulic lifters on solid ones. but you can use camshafts designed for solid lifters on hydraulic lifters. i beleive it is to do with the opening and closing rates.

[AndySAXO]

also i think have to get some headwork done aswell, i would ring newman up as he very helpful always answered my question he will explain it all for you!

andy

[AndySAXO]

but i unsure on the in and outs i have not look to much into it, as i dnt plan to go to them!!

if i got for any different cams it will be Ph4 or 734 which dont require solid lifters!

andy

[KamRacing]

the parts will cost more than the camshaft for top of the range parts like catcams.