Dreaming.

10psi was too much for my poor zed box.

Dave

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USA Daily: 2014 Nissan GT-R, very minor modifications for the track
USA Project: 1978 280Z, minor suspension upgrades, VK56DE conversion in progress. SOLD
AUS Race Car: 1973 240Z, L28ET, Autronic, GT35R. SOLD
AUS Project: 1972 1600, 3200km old S15 SR20DET, ground up rebuild. SOLD

And because Zac is pedantic (and rightly so) I guess my 10psi is around 200rwkw. If you're going to get more pedantic its at 6500 so you can work out the torque for yourself.

Dave

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USA Daily: 2014 Nissan GT-R, very minor modifications for the track
USA Project: 1978 280Z, minor suspension upgrades, VK56DE conversion in progress. SOLD
AUS Race Car: 1973 240Z, L28ET, Autronic, GT35R. SOLD
AUS Project: 1972 1600, 3200km old S15 SR20DET, ground up rebuild. SOLD

maybe zac transfers the torque a bit nicer? (not a 5 puck clutch )

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It helps if you know how to change gears.

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Recommended trading: datto-510

I do have a 5 puck clutch in it. I've had this box for years and it has never given me the slightest hint of trouble.

beef, hows your head?

Doh! Serves me right for being a smartarse...

My head project hasn't progressed at all lately. I was working on the diff + fitting the new seats, then the little woman gets interested in buying a house...

Badly struggling for time atm.

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Recommended trading: datto-510

I was looking at the valves for the twin cam and 12v
the twin cams are 36.5mm !!!!!
the 12v are 34mm.

Beef have you checked to see how much work is involved in the twin cam head?

We had a bit of a thread about KA-de heads a while back. They are a load more work for more than one reason.
However, nothing is impossible!

d,

Yeah, I've had a look into it. Definitely do-able, and some guy in the states has apparantly done it already. You need to get some custom parts made, and that seems to scare off a lot of people.

I dragged a previous thread on OS Giken & LZ heads w-a-y off topic, and there's some info in there. Have a look. Any more questions, gimme a bell.

At this rate my DE head project (and the rest of the car) will be finished in the year 2053 (best estimate so far!), so don't expect any progress reports any time soon.

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Recommended trading: datto-510

I saw the head gasket for the 240sx with a de from 1993 and its the same as the 89 12v pintara head. Apart from the chain and front cover it would be better to use the pistons of the DE if you can bore an l series to 89mm and save alot of money in not getting custom pistons made.

I have seen a number of US KA24DE (240SX) head gasket photos, and a number of Pintara heads in person - they definitely look like 2 different beasts to me. More to the point, I have the KA24DE head that was sold in Aus - and it's shape is different to the pintara's.

More to the point #2 - I have the bits, and custom work is definitely req'd. Wrong number of timing sprocket teeth for starters.

Custom pistons shouldn't be needed. For the bigger bore, you could fit Z20S rods in an L20B block, with VG30E pistons. The VG30 pistons are 87mm stock, and o/s pistons can give you whatever you want. 89mm is a bit brave.

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Recommended trading: datto-510

I've put a few posts on the nico forums, that guy deviousKA seems to know alot, but also doesnt give away too much. I think hes doing the conversions on a Z block... He keeps reiterating the point of how easy they are to use.

Anyway good luck with the twin cam I'd love to see it done. Are you planning on running 2 timing chains? I've seen some diagrams of the timing setup, your sure going to have some fun.

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From what I recall, deviousKA plugged the block, rather than the head (like Zac did). Plugging an L block wouldn't be very easy. I think that's his main reasoning behind it.

I'm going for the L, because it carries earlier emissions regs with it...

Yeah, twin run chain. It would be a pretty serious ask to convert it to a single run - which I figure is why Nissan went for the twin.

The timing chain setup is going to be an interesting one, but I have bigger things to worry about on my car!

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Recommended trading: datto-510

Yeah the Z blocks seem to have a circular water hole there (iirc) whereas the L blocks have a pentagonal shape thing there.

d, I dunno what head gaskets you were really looking at d, but they are most certainly different around the timing chain areas.

rl]
Yes sorry I meant the coolant holes are the same as the sohc but definately not the chain area
The good thing is that the small combustion chamber on the DE will take flat top pistons from anything from 87-89mm.
The main thing is the pin height to achieve 10.25 to 1 which is a safe compression ratio capable of fuel quality variation and higher state of ignition advance.
I will look for a DE head now as I feel that the design is better for NA.
The sohc surely is perfect for turbo it stomps all over a NAPZ head.
I need the L engine to lean towards the passenger side so I dont know what gearbox to use? anyone?
The other thing Im attempting is a single chain system but is it that difficult when some Z engines have a single as well.
Im also interested in a ol non pollution setup thats why I want to stick with the loco L block.[/url]