GJM85

Go Des, GO!!! Did you have anything done to the 5k? I see a pro torque twin timing kit!

5k flat top and 4k flat top are the same.... the 202 lifters and the a12 pushrods are the go but you'll need a 4k cam or have yours reground to suit solid lifters. I've got a 5k flat top with a 4k head. 5k cam reground to a Tighe 104 to suit solids, 202 lifters, a12 pushrods and 4k rocker gear. It works. The rocker to valve clearance changed with the cam from .024" intake & .026" exaust to 0.012" intake & 0.014" exaust.

I... I don't know what to say. Other then, it wouldn't be an easy job and for your own safety, don't!

4k lifters have a different diameter to the 5k. There is also a difference between solid and hydraulic cams. The issue your having isn't because of the lifters. The pushrods you have are for the flat top piston 5k which has a 6mm taller head, hence the 6mm longer pushrods. The rods are around. Try the wreckers.

If your running a dished piston 5k with hydraulic lifters your pushrods length should be 150mm ball to ball. K Motor Pushrod Collaboration

Can't justify what I said because I was drunk, but I can justify a "f@$k you!"

I was young and foolish once. I sometimes wish i'd have kept my firstg ksev. We all need to grow because we nev3r n3ver know. We all always yearn for that which we do not have, for that which we do not know..........

I'd tell them to take their their 2/3rd's and find one in as good condition for the same price....

ABouT $100,000,000 per PSI.... the only way to achieve this is too have three 45minute smoko brakes per hour, get paid a billion euros/per smoke break, pay no tax and have a torque wrench that goes into the Quillions!

You got a lot of history with this car. 62 pages of it. If you haven't already, go back and start from the beginning. I read my thread through often just to reinforce what I originally wanted the car to be. It's not. Some parts of it make me feel like a doosh. So much so, that I have edit the post. But only when I feel I can justify the change. I didn't know shit f@$k all when I started. Still don't really, but nothing will build your character like a good ol' fashion humbling. In a world where a dollar is nothing but a piece of metal, and money in the bank is nothing but an illusion, it sure as hell holds us back....

My first car, '83 CS had the same interior. That is a beautiful car man. It looks as if it just drove off the lot. I've got a good ke70 clutch cable if you want it.... PS: that rear bumper looks like a work bench. :lolcry:

The front arches are always deeper because that's where the weight is. And ride height is always designed around wheels size and ideal ground clearance. The front always has a larger suspension travel because that's where the initial impact of bumps is taken. It allows heavy impact in the front while the wheels are turned. I think this 25 looks rad. In fact it's going in my collection.

Absolutely. If you come across second hand lifters you should have them refaced before you use them.

I like boostcruising... because it is a cool place to hang my nutsack on a boring sunday afternoon. :cmonkey:

Ok then your sweet. I wracked my brain for weeks trying to understand the in and outs of this conversion. Use the 202 lifters, a12 pushrods, 4k head and adjustable rocker gear. Get your cam reground to suite solid lifters and you'll be sweet.

Yes the block height is the same. No you cannot use 4k lifters in a 4k block because the lifter bore is a different size. The holden lifter and datsun pushrod combination is a tried and tested combination for what your trying to achieve. Do you have a shallow or deep dish piston 5k engine? The deep dish (D-shaped) 5k has a shallow combustion chamber in the head. That head is 6mm shorter in height than the shallow dish (O-shaped) engine. If you have the shallow dish engine using a 4k head won't lower compression as the heads are almost identical. Here's a diagram I drew sometime ago, if you can understand what i've tried to display.

My ke20 rusted out hardcore under the battery stand. Thankfully someone cut it out and replated it before I got it.

Nothing will fall straight in there except for a K motor. Anything you choose to put in there will require modifications to you suspension, brakes, diff, transmission, engine mounts etc... except for a k motor. Baby steps first buddy. Wait till you get off your P's.

I know but it gives you an idea. My dad had a 3t-c in his ke70 and that was passed easily. But I still think you need to contact an engineer and have a better idea of what you plan on doing.

Queensland Modification Handbook Any engine conversion now requires certification by approved persons. But I think its a 50% increase of original displacement.

Standard a12 pushrods are fine. It's the length that makes the datsun rods ideal @ 152mm.

ok just go to ebay.com and search a12 pushrods. < I fixed the link. > You don't have to use the 4k cam it's just that 4k's have solids lifters as standard. If your 5k currently has hydraulic lifters you will need to have it reground to suite solids. But this is where everyone tells you the conversion is a waste of time.

Hey look the dude still sells them a12 pushrods

Yes, i'm running this conversion and it works. If your running a dished piston 5k with hydraulic lifters you'll need a 4k cam or your current one reground, a 4k-c head, adjustable rocker gear, the holden 202 red motor lifters and the A12 pushrods. The lifters come in sets of 12 but some parts stores will order/sell then individually. The pushrods will probably be the hardest thing to find. I manage to find a dude on ebay USA selling lightweight items out of Japan.

You are a bad bad man. :huh: