Turbo 4K?

[pervert]

Anyone here have/had or know anything about turboing a 4K.

Can the 4K handle it without internal modifications, what about the gearbox/clutch/diff? I'm thinking of running a mid sized turbo, with a 45mm sidedraught carb, and about 10-12psi.

Is this going to work, or is it going to pack a major sad.

Stupid question maybe, but can you run an intercooler on this, it will be a blow through set-up...?

Anything else to look out for, and finally, will this be worth it?

[Dell'Orto]

It wont take 10-12psi with stock pistons, highish compression and lots of boost on stock 80's pistons wont last long. Would be good fun though!

Someone was selling a turbo kit for one a while back, think it was on here

[pervert]

Yea, I have the turbo kit sussed for it, so getting that sorted is the easy part.

I just want to know if it will be worth it really...

What psi would the 4K hold out on...the kit can run up to about 15psi...

You think it would go pretty well on 12psi then???

[Dell'Orto]

should make nearly 100hp then

It'll handle 6-8psi alright, pretty sure with a blow through kit can't be intercooled, the angry old man might have more of an idea

The driveline will be sweet, but if you're gonna thrash it (why would you you put a turbo on otherwise ) that poor wee diff will go snap

[jeremiahnz]

Suck through can't be intercooled as it would be try to suck fuel through the intercooler as the turbo is draws air and fuel through the carb rather then pushing it through. Suck through is the easiest setup on a carby engine.

Apparently the k series engines will get pretty hot running a turbo setup being non cross flowed, although opinions may vary on this.

While investigating it for an engine of mine the resounding reponse was that the gain was not worthwhile for what I wanted.

To answer your question, yeah it will work, it has been done before. The results won't be earth shattering but if it is good enough for you then great.

[RE20]

Id take advice from someone who actually knows (regarding how much PSI it can handle)

[pervert]

There are plenty of people on here who know plenty about 4K's.

I think I can make my own judgement on whose information I trust, and even if it goes wrong...what do I loose?

A 4K...big loss...

[thaphatty]

theres nothing cooler than a sohc turbo,

especially when its carbed

X10 if its a 4K!

go for it!!!

[wde_bdy]

theres nothing cooler than a sohc turbo,

especially when its carbed

X10 if its a 4K!

go for it!!!

the 4k isn't SOHC, it has PUSHROD POWER!!!!!!

[ke_25]

and if it does blow.. its only approx $100 for a new one dpending on wher eu get it.. no big loss.. try club k they have a few post on k series turbo set ups..

[Lloyd]

Dude I work with (James) has a KE20 and he's just rebuilding his carbs for a turbo 5K setup. Might be worth popping in sometime and having a chat to him about

[RS13]

I believe there's a 150kW turbo 5K on Club-K.co.nz, I had a mate a couple of years back with a turbo 4k KP, went hard, but still got dicked by a factory redtop.

I believe he was running a cut n' shut factory exhaust manifold, T2 turbo out of an ET turbo Pulsar, SU carb off a triumph something (TC2500?), wasn't intercooled or anything though, super rangi setup. From memory, it was running 5-6psi, which was the limit for factory pistons etc.. I'm pretty sure it ended up sticking a leg outta bed, had problems sorting out a decent oil feed.

HTH!!

[z|gen]

angelas car (turbo 5k you are talking about is fuel injected, and heavly modified.)
standard 4K pistons will handle 6/7, anymore than that, and you'l notice the signs of dead engine syndrome.

[pervert]

Scratch that idea then, if its going to be turbo, it better be able to boost well.

[vvega]

we ran a 3k with blower on it for 1 year on 10 psi with just slowly increaing blowbuy

id do the rod bolts and make it as low compression as posibile using the avalible swapable heads

10 psi will give you about 60-70 hp more from 10 psi are you sure the reat of your car will handel that kinda of a increase ???

hope this helps

ps jettingd is really hard to do right
v

[Lloyd]

5K bore is 80.5mm, 4AGE bore is 81mm..... Time for an overbore and some 4A pistons? Not too sure how you'd go with rods and things as I dont have sizes of gudgeon pins and things but its worth a look I suppose. Even if you find a cheap 4K or 5K somewhere and build it with the other motor left in the car for daily driving.

[pervert]

Even if you find a cheap 4K or 5K somewhere and build it with the other motor left in the car for daily driving.

I'm going to buy another car anyway, and the DX will come off the road for a while while I do the engine. I hate only having one car, I had five this time last year...

[Lloyd]

Buy my crappy old Mirage. I'll put a warrent and rego on it if ya like, motor was rebuild about 20 kms ago (not thousand, 20kms) but the car is a POS

Turbo carby shouldn't be too bad if you know what you're doing. Suck through would be easiest probably, but then you cant run an intercooler if you want to and you'd be running fuel through your turbo. Blow through means you can run an intercooler and your turbo would only be seeing air, but you'd need to completly seal the carby from the atmosphere (or buy a turbo carby) and run a rising rate fuel pressure regulator (bump up carby fuel pressure 1psi for every 1psi of boost).

[z|gen]

any reason for wanting to go carby setup rather than efi ?

[Lloyd]

Well its probably cheaper and simpler/easier for most people unless you're starting off with something injected already.