How To Spot A 4K Head?

[swiftless]

Hey Tojo,

 

Do you reckon this would be a 4K with dished Pistons or a 4K-U? I'm just going by what is said here and because my head casting number isn't on the regular list, but matches Banjos 4K-U.

 

I'll check out toyodiy in the meantime.

 

Thanks,

Donald

[tojo2]

Hi Donald

Its clealy a 4k With dished pistons and could well be a 4ku,

 

 

Most if not all austalian delivered 5k heads will suit it

Just swap over valve rockergear.

 

Type of head you want is easily recogniced by lumps under sparkplug 1 and 4

I wouldnt worry about casting numbers

 

Cheers

[Banjo]

Hi Donald,

Tor's suggestion is a good one, of just replacing your cracked head with a 5K one. Here is a picture of a 5K head clearly showing the casting "lumps" under no:1 & no:4 sparkplug holes, to look for.

 

 

The compression ratio will not be too much different to what you've already got, and after you had the 5K head skimmed, you could always cc it's combustion chambers, and work out the CR. Others on here have cc'd the 4K "D" dished pistons before, & you'll find the cc figures here somewhere. 22cc off memory.

 

Just make sure you swap over the rocker gear from your old head, and use your original pushrods, as you've got adjustable tappets.

 

All you've got to do is find a 5K head. Used on Toyota vans & petrol Toyota forklifts.

 

P.S. Noticed this photo I found, shows a casting number 7, which again ,is another number not listed on our Wiki K series head numbers.

 

Cheers Banjo

Edited February 24, 2015 by Banjo

[styler]

I have one rebuilt D dish head 18cc chamber, would sell pm me.

[Ke25mango]

  On 2/24/2015 at 10:35 PM, Banjo said:

Hi Donald,

Tor's suggestion is a good one, of just replacing your cracked head with a 5K one. Here is a picture of a 5K head clearly showing the casting "lumps" under no:1 & no:4 sparkplug holes, to look for.

 

 

The compression ratio will not be too much different to what you've already got, and after you had the 5K head skimmed, you could always cc it's combustion chambers, and work out the CR. Others on here have cc'd the 4K "D" dished pistons before, & you'll find the cc figures here somewhere. 22cc off memory.

 

Just make sure you swap over the rocker gear from your old head, and use your original pushrods, as you've got adjustable tappets.

 

All you've got to do is find a 5K head. Used on Toyota vans & petrol Toyota forklifts.

 

P.S. Noticed this photo I found, shows a casting number 7, which again ,is another number not listed on our Wiki K series head numbers.

 

Cheers Banjo

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Hey, how about the valve spring. Is there any difference between 4k-c, 4k-u and a 5k?