Has this been done??? Is it possible using K20 components??? I've searched google and this forum and came up with nothing, someone elses insight on this would be greatly appreciated.

 

Why? How would you lubricate it?

 

I haven't done any research on timing chains, but I'm guessing you'd have to change out every single pulley. Crank pulley, balance shafts, water pump, alternator, a/c, p/s, tensioner, cams. Most/all of that is going to be custom work. The stock timing belt holds up fine if you change it at the specified intervals.

 

Yea I figure it to be a good amount of custom Work, I'ma very good welder and Machinist I figure I could take a crack at it since I have a surplus of motors sitting around, I'm doing a Stroker H Series, figured it would be sweet to run a Chain set up (Since ordering custom timing belts and waiting for them isn't really my thing). I'm using a Dry Sump External system, wouldn't be anything to hard to run some lubrication to it.

I'm already using a Kaizenspeed Kit to eliminate balance shafts, I have everything from a Type R K20, if I could figure out a way to mate my cams to the cam gears and get accurate timing marks....i'd be ok.

Just wondered if anyone has done it, there is one guy who's pulled it off in New Jersey, but I can't find him on facebook and he's not a member here, and he sold the car he did it on to a kid who knows jack **** about anything and won't let me take a look so....*Sighs*......oiy.....depressing. Insight would be great.

 

i just don't see the point in wasting the time to make a chain work when the belt works fine, even in drag cars that are seeing 11,000+rpm.

 

Not happening. You would have to redesign the entire front of the motor for basically no performance gain.

 

It would be easier to order timing belts. Maybe there is some other way you could apply your skills.

 

I like the idea of doing this. Would it be maybe more feasible to modify the current k series pulleys to work with the H series components. Kind of the idea of running a k crank on an H, that no one ever thought it could work.

 

But what's the point?

A timing belt is external to an engine while a timing chain is internal. You would have to basically redesign the entire front of the motor for no gain. If you want a chain that badly, just go K.

 

Aside from the fact that converting the system to a chain would be an immense amount of work, why would you need a custom timing belt? Guys have done 105 mm cranks for 2.7 or so displacement with stock H block height, so no need for a special belt length.

 

I'd rather have a belt. The chain and guides on K series have their own set of issues.

 

I am not to informed on K's, could you please elaborate a little bit on the issues?

 

chains typically cost you more power than a belt, require oil and guides and all that. the only advantage to a chain over a belt is service interval..

 

The guides stretch and wear, some faster than others. Heavy endurance racing at high hp levels has been really hard on tensioners and chain guides. There are solutions, but it has to be managed with a maintenance schedule. Some of the fuels getting in the oil softens up the guides as well.

 

I did think about it, but more for the advance and retard of cam timing and running coil-on-plug with no distributor. Anyways it will be a lot of work that maybe is worthless.

 

Lol

You Schmucks telling him not to do it.

Do it dude!

Post pics when you're done!

I'm interested!

 

A timing belt setup works just fine for all of that. Adjustable cam gears cover the timing stuff. Whether you use a belt or chain has no bearing on a COP ignition system. Actually if you really think about it. The sensors on the stock H22 timing gears will work for a distributor-less COP ignition system. If you get rid of them then you have to construct a completely custom set of sensors and mounts for a timing chain setup. For no gain real gains other than to say you did it.

Consider the basic components that will require some custom fabrication;
cam gears
crank gear
timing sensors and related ignition and fuel injection components (TDC, CKP & CYP sensors)
chain tension system
chain lubrication system
engine cooling system (ether fab a new gear or use electric water pump)
sealable engine/timing chain cover and gasket(s)
Valve cover modification (has to mate to timing chain cover to seal properly)



OP,
Not sure why you have to wait for a custom timing belt...what have you done that requires a custom belt?

Not saying don't do it. IMO it would be worth the time if you are doing it for the personal engineering challenge. I don't see any other gains that will come of it other than that. You are a welder and machinist, you should come back to us with a finished product, not asking how to do it....lol

 

Take a look at my thread I went the other direction and modified the kseries crank to fit in a h and use a timing belt rather than it's original intended use Of a chain

 

cool idea but it will never work because the chain would need to stay inside the motor in order to be oiled. i perfer belt engines cause they're easier to service.

 

Post the link.

 

But, by definition, it's not very good engineering if there's no value added to the system. Kinda surprised this discussion is still going...

 

http://roskoracing.com/TechBlog/?p=149

 

What about I vtec?? If this is theory in theory would the ability to advance and retard timing create way more power. Is this and the cylinder lining the only benifits of k to h series. I mean I’m lost on how this wouldn’t be possible with enough money and also why it hasn’t been done?

 

SMOKE CRACK

 

Of course it's possible - buy a K20/24 and done.