Reply With QuoteNew Plugs + filters, some 98 octane fuel and crank some timing into it.
From there, you can transplant in a 5K (bolt in), shave the head, put a cam in it and a bigger carb.
None of this will net any ridiculous power.
faster 4k
hey. i have a stock 4k in my 1983 ke70
was wondering what can be done to make the engine faster it seems to be lagging quite a bit recently on take off and at start of gear changes...
is there anything simple which can be done to get better acceleration.
in saying this i dont mean a new engine.
cheers...
New Plugs + filters, some 98 octane fuel and crank some timing into it.
From there, you can transplant in a 5K (bolt in), shave the head, put a cam in it and a bigger carb.
None of this will net any ridiculous power.
You can have any brew you want... as long as it's a Datsun / Corolla / What is that?
bore it out 80thou, new piston get everything balanced, cam, full port& polish and shave on the head, stronger valve springs, twin dellertos, extractors, electric dizzy, electric fuel pump with fpr.
should have alittle bit more go after that
And for that money you could put a 4AG in, too.
My philosophy on K motors is that most people who warm them over want as much as they can for as little as they can.
Hence why having a head ported and polished, new O/S pistons and twin carbs aren't my suggestion list.
Gav / D1 daveys' old 5K, rebuilt, shaved head, big cam, single carb made 48kw atw, which is very respectable for a sub $500 motor.
Last edited by Javal; 6th November 2009 at 09:07 PM.
You can have any brew you want... as long as it's a Datsun / Corolla / What is that?
Unless you have a hot / race motor you will not need twin dellortos or twin sidedraughts of almost any description, and you will infact, make minimal power gains putting them on a standard motor.
You can have any brew you want... as long as it's a Datsun / Corolla / What is that?
48kws? lol it was 40 haha sooo not worth it, save for a 4age
my cam so so lumpy lol would idle a stock carby haha
what cars should i be looking in for a 5k? early lite-ace or something?
you will spend over 2K and make as much power as a stock 4ac.
waste of time.
RT142 Estate.
AJPS.
i got a worked 4k in my ke20, havent had its tuned or dyno yet but wouldnt see it put out more then 60rwkw. this is what i have
4k engine with fresh rebuilt
bored out 60" with new ACL pistons
Ported & Polished Head
double valve springs
Tighe Cam grind
dual 40mm dellorto dhla (fresh rebuild) on a lynx manifold
tuned length extractors and 2" exhaust system
Crow Cams Electronic ignition
Electric dizzy
i didnt build it but got recipets for $4000 for parts, port&polish and assembly
i spent 4k putting a 4agze in my ke70 and i know which one is making a shit load more power
you need to have a look on Rollaclub they have the info you need. That said though I am with Konakid, I think a 4Ac is completely superior to any K engine. For the money it would take to upgrade you could just fit an more competent engine
My website: SQ Engineering - 4AGE and 3SGE upgrade/replacement parts
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