Redline On A 4k-c?

[KESR20]

Hey ladys and gentlemen,

 

Sorry if this has been asked before, but I'm in a rush too find out redline on a 4kc in my wagon, a new set of guages are going in in the next hour or so and i just need to know so i can set the tacho :thumbsup:

 

thanks in advance

 

_)flat tyres suck(_)}

[kiahn]

well it depends how long your engine needs to last and how old it is

 

rebuild it and get it all balanced and it will rev out to 8 grand easy from what ive heard

 

stock, you should stop at about 7000 max

[Toy-Yoda[RL]]

6500 is factory redline

[Redwarf]

Find where it valve bounces, and set it a couple of hundred under that. :thumbsup:

[coln72]

more accurate is to rev her till she blows. Rebuild and never go that high again :thumbsup:

 

Seriously 6000ish is all you would want on a stock motor. I'm sure it will rev higher, but all you will be doing is making noise.

[camcam]

6 .....6 1/2 i reckon buddy

[camcam]

more accurate is to rev her till she blows. Rebuild and never go that high again :thumbsup:.

i like that lmao

[TE278U]

dyno it and find out where you make the most power, then it's pointless going much further...

 

Try modifying you rocker gear to accept motorbike valve springs, and see if you can rev to 12000 :thumbsup:

[Felix]

Do some timed runs with a stopwatch on the same piece of road... Change at 5000 and measure say 0-100kays. Try again at 5500, then at 6000. Work out what shift RPM is quickest.

[rob83ke70]

a stock k motor won't do anything exciting over 6000rpm, all it does is make lots of noise and sound like it will blow up.

 

improved induction/exhaust, different cam profile, elec ignition, balancing, and lightened flywheel, with everything done right you will pull 8000rpm out of it pretty easy...

 

a LOT of work to get it to that stage though.

 

Robert.

[SLO-030]

Realistically, I'll be building the 4K in the 38 to handle 7,500-8000. Just to tide me over till the next engine combo :thumbsup:

 

Will pretty much match up with what Rob has just said (MSD ign.,Balanced, Better carb(s) or EFI, Extractors and exhaust, 606 cam and slightly lightened flywheel)

 

CHEERS

Ryan

[KESR20]

wow fellas this is great info!

 

i got it in and its set too 6000, seems too not give any more power over that.. :thumbsup: cheers