Buy parts first or Prep engine first?

[Space Monkey]

If it helps any, i'm getting CP Pistons.

[Shift_Kouki]

Really you only need to buy the pistons first.

When you have the block bored / honed, you want the machine shop to take care of your rings for you. And like 240freak said, it helps them be much more precise about the bore / hone process.

Other than that, all the assembly of the rotating assembly and head can be done at home. I'll probably have my spare head checked out for cracks and milled flt if needed, and then have the spare block bored over and piston rings taken care of. -- I'll do everything else (like valve lapping, and assembly) on my own.

[fiznowler]

This is a KA not a bad a** wound tight motor out of a Lambo. If you get your machine work done and measure the cylinders and order pistons accordingly you will be fine.

[DrifterXRPS13]

KA > SR..wait, what was the question?

[audtatious]

Damn guys....

Anyway, the first thing to do is determine what your long-term goal is with the motor. Then map out the steps and requirements to reach that goal.

[Space Monkey]

Damn guys....

Anyway, the first thing to do is determine what your long-term goal is with the motor. Then map out the steps and requirements to reach that goal.

What does my goal have to do with this? I just want to build the motor correctly in the proper order...

I am starting with a KA for now as a learner motor, but i would love to rebuild a nice VQ one day and plant it in a 240Z.

If the goal is what you want, then here:

Goal is to build a bullet proof KA with parts that exceed 600HP for no reason but assurance that they are quality parts. This will be my daily for every day travels.

So back to the actual question:

1) Buy internals and get the machine shop to make the block accordingly

OR

2) Machine the block and buy the parts accordingly with correct shim sizes?

OR

3) Do both work in their own ways? (If so...How?)

[audtatious]

You are right, the goal has NOTHING to do with the way you build your motor....

Guys, I apologize. Go ahead and flame away....

[Space Monkey]

You are right, the goal has NOTHING to do with the way you build your motor....

Guys, I apologize. Go ahead and flame away....

I was not flaming you at all...just don't understand what one has to do with the other...

Maybe someone of your caliber could step down from your mountain of awesomeness and teach this grasshopper a lesson?

[DrifterXRPS13]

Damn guys....

Anyway, the first thing to do is determine what your long-term goal is with the motor. Then map out the steps and requirements to reach that goal.

wait for it.

What does my goal have to do with this? I just want to build the motor correctly in the proper order...

I am starting with a KA for now as a learner motor, but i would love to rebuild a nice VQ one day and plant it in a 240Z.

If the goal is what you want, then here:

Goal is to build a bullet proof KA with parts that exceed 600HP for no reason but assurance that they are quality parts. This will be my daily for every day travels.

So back to the actual question:

1) Buy internals and get the machine shop to make the block accordingly

OR

2) Machine the block and buy the parts accordingly with correct shim sizes?

OR

3) Do both work in their own ways? (If so...How?)

let's see your response

You are right, the goal has NOTHING to do with the way you build your motor....

Guys, I apologize. Go ahead and flame away....

see, see, but i thank you for your approval.

[numbnuts240]

lesson number one. bunnies eat grasshoppers.

[audtatious]

I was not flaming you at all...just don't understand what one has to do with the other...

Maybe someone of your caliber could step down from your mountain of awesomeness and teach this grasshopper a lesson?

Sink or swim

[audtatious]

lesson number one. bunnies eat grasshoppers.

Num Num Num

[Space Monkey]

<--is terrible with riddles....

[AZhitman]

Wow.

Some of the useless posts in this thread are probably from people who don't know the answer, so they tried to make you feel dumb.

It's not a bad question.

When we built my KA, my goal was similar - I wanted to be able to run 15-20 psi reliably (correction - bulletproof) on pump gas.

Tolerances were much tighter than Nissan ever intended. Details were doubly-attended to. Cleanliness was key.

I bought the parts first and had the block machined accordingly. As was said earlier, if your machinist isn't interested in the parts going INTO the block, find a new machinist.

Mine found that my rods weren't identical in weight, which would affect balance. Also, tolerances at the wrist pin were off (miniscule amount, but enough to make me send them back). Pistons were dead-on (CP did a great job). Entire rotating assembly was balanced and came out beautifully.

[audtatious]

I know NOTHINK



The method/materials is determined by the goal. You build engines/source parts differently if you are going towards drivability/reliability vs, say, absolute performance.

My "mountain of awesomeness" stopped me from being helpful.

[Space Monkey]

Thank you Greg!

I will start collecting parts then bring it all with the block to the machinist.

Anyways, to thread jack my own thread...Greg do you know if RotoRimp is coming back anytime soon?

Thanks!

[AZhitman]

Jason's had a mess of a year... He's had a few setbacks that are interfering with projects, but it looks like he'll be back on the ball pretty soon.

Feel free to remind him that he has a bunch of loyal fans... errr... CUSTOMERS waiting.

[Space Monkey]

I understand. His job at the USAF is a little more important that my FTSB LOL.

If he's back some time soon i will bump his thread so he can do a count on how many bars are pending!

[240freak90]

This is a KA not a bad a** wound tight motor out of a Lambo. If you get your machine work done and measure the cylinders and order pistons accordingly you will be fine.

it doesnt matter an engine is an engine and and tolerances vary from engine to engine. if you want it to run a good long while then you MUST make sure your tolerances are correct for whichever engine it is, whether it be a geo metro or a lambo gallardo. if your tolerances are too tight, then youll end up losing quite a bit of power because of too much friction and end up wearing your pistons out prematurely. and if they are too loose then piston slap occurs which could break a piston skirt or just eggshape your cylinder walls.

oh and wth does wound tight motor mean?