Alex G's URS6 AAN Billet hybrid K24-7400 build

[PLANETARY4]

Hey guys, Well I discovered I was running lean. I threw a rod on #5. I hope my head is ok. I think there are a couple bent valves.















:(

[vt10vt]

Lightweight block mod?

I feel your pain, when did that happen? Was this with the new K24 on it?

[PLANETARY4]

stock k24-7000, +.5mm valves P&P 7A head, 7A cams, RS2 EM. Shitty MTM 1+ clone chips. I had serviced injectors too. I will get a proper tune this time
This happen just before xmas. merry fuckin christmas

[vt10vt]

Well FWIW at least it doesn't look like there's valve kiss marks on the piston, do you know the status of those valves yet?

[loxxrider]

That's what I was thinking. Why do you think the valves might be bent?

[PLANETARY4]

I haven't disassembled the head yet to test. I suspect the intake valves on #5 are bent because it gets harder to turn over by hand when they move. Same portion of the cycle.

[vt10vt]

It might just be where they're located with relation to other lobes in terms of effort, have you tried going the opposite direction? I've never seen bent valves without kiss marks. I have seen valves halfway embedded in pistons before though haha

[PLANETARY4]

Finally making some headway


A little too fast for the little brute 7000


Machined K24 housing anyone?


7000 under the machined K24 housing

[paradox11235]

I finally got my tune dialed in on my 200 running the 7400, I love the setup. Drives like stock but pulls like crazy. I think a billet wheel is in my future...

[PLANETARY4]

Cool, I'm excited! I think later I will install a ARD billet wheel.
What turbine housing are you using?

[Marc]

eesh. too much clearance on that turbine outlet. you're looking for closer to .040" total clearance. that looks like about 4 times that.

[varia]

i think marc is right
here is mine:
https://www.flickr.com/photos/quattro4l ... 930622196/

https://www.flickr.com/photos/quattro4l ... 930622196/

[PLANETARY4]

That picture is the 7000 not the 7400. I was showing the difference. The 7400 fit is .040" offset from the profile

[Marc]

reading helps sometimes. I see the caption, missed it the first time. carry on.

[PLANETARY4]

I can now focus on this project.
No bent valves! I surfaced the head, decked the block, honed it to 81.5mm. I'm awaiting Wiesco pistons from FRP.





I took only .003 off of each. Not bad.
I plan to port match the RS2 EM.

[PRY4SNO]

Helluva set up you've got to work on things... jealous.

Digging the updates, thanks for posting.

[PLANETARY4]

haha, thanks man. When I started working here in the back of my mind I was thinking "I may end up building an engine here". Well, one coworker blew up his E36 M3, then I killed the 20vt. I never built an engine before, but here is the place to do it.

[PLANETARY4]

Deburring the bottom end. I cleaned up the oil galley. I took a video of a bore scope through galley. Woot!

[PLANETARY4]

S2000 color scheme. I machined the 20V turbo

[PLANETARY4]

[chaloux]

oh heck ya! I love aftermarket pistons just for the weight savings.

[PLANETARY4]

can you really feel the response difference?

[PLANETARY4]

ARD 11 Blade hybrid

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