4K-c turbo blow thru setup with stock carby?

[Mr.pickles]

I’ve heard they can handle 6 pretty safe. But 8 and 10 shortened the life of the a fair bit haha 

ive got mine set to 8 psi but I will give it a go on 10 as well. 

Didnt seem to build up to much boost free reving but should be alright under load. I didn’t look at the boost gauge when I started it.

tuning it is definitely going to be abit of a nightmare that’s for sure 

 

Edited June 14, 2020 by Mr.pickles

[altezzaclub]

Nah, it won't boost free-reving, that takes no power to do.

If you haven't done it already, PM 68KE15 and Taz_Rx and ask them what advance and jets they used, at least they've both built turbo 4Ks in the past.

You'll end up needing a mixture display or some dyno time to make sure the mixture doesn't lean out somewhere in the power curve. I've used a mixture display a lot, I like being able to glance at it under all sorts of driving conditions.

[Mr.pickles]

I have already drilled the jet out. But I was under the impression that the secondary jet is 1.7mm?

I have another 2 carbys with stock jet if it’s not right

[altezzaclub]

Were any numbers stamped on it? I thought they were 1.53mm, but it could be anything with so many carbs for different countries.   1.7 to 1.8 would be good.

Anyway, give it a whizz and see how it goes!

[Mr.pickles]

Hmm... second oil feed fitting has rocked up and it to does not fit 🤦‍♂️ Seems the same size but must be the wrong thread.. turbo is an eBay tdo5. does anyone know if there are more then one different tdo5? Or why they don’t fit? 

Cheers mr.p 

[altezzaclub]

How's it going??  Done any more??