Ok before we start, lets get this clear I understand that what I'm about to ask I SHOULD have done to my motor anyway. But what I want to know is, has anyone on here had their motor build with oem or NPR pistons and rings at stock bore and not had their cylinder holes honed and has anyone on here had a metal head gasket and arp headstuds installed without having their head decked? Preferably on a KA24DE. I've done alot of reasearch on KA's since I'm building one, I see that answers very depending on who you ask, idk about that b.s. all I want to know is if anyone built their ka cutting corners with the honing and decking, because I'm a pos and want to skip that step and order new pistons.

 

There must be a new wave of idiots figuring out how to post threads on TR now.

 

and why is that, I used the search button and didn't find nothing. I looked on other sites and found nothing useful. I have a TR account and no zilvia or 240sxforum account and didn't want to make an account to ask one of them guys. So show me what you found on our search button, closest thing I found on google was some honda forum saying this.... "If your cylinders are not scored you don't need to hone them. Just clean the cylinders with WD40 and scrape off the carbon at the very top of the cylinder and use a new set of Honda OE rings and your golden.

If you don't beleive me then you can refer to the Helms manual which also states what I just stated. I've seen this done a couple times and all times it has worked awesome.

This is what Omniman did with the 14 yr old B16A block in our 200whp B16 Project car."

and all I wanted to know is if someone on here has done it when replacing the pistons, the skirts of mine have some wear on it

But you know you're probably right since I'm a part of some new wave of idiots

 

60$


sixty fucking dollars, really if you are questioning needing it, you probably should do it, not to mention, did you say you're trying to order new pistons, and NOT hone the block ?

Really now ?

If you dont want to deck the block, and it wasnt overheated, im not gonna yell at you for that, but for god sake dont continue with your cometic headgasket plan. I'm sure if you want to quesiton this one, kevin can give you more feedback on it.

 

I guess you're right Z28ricer, I'm just being a Jew about spending money but in the long run its worth the 60 bucks for the engine to have a longer life. I'm planning on buying this dudes KA assembled block when he gets back from his trip it already has new rings and bearings so I may not even have to worry about that. Oh and my friend had his SR rebuilt either at Forged Performance or from someone that worked there before, he's got arp headstuds and a cosworth hg and didn't have his motor decked. Right now he's broke and needs ic piping for his freddy intake manifold and have it tunes with a SAFC2 so I can't ask him how his motors been running.

 

Hone it and re-ring it. It isn't that difficult. As far as the cometic gasket, it's potshot, some have had success coating them with copper spray or hylomar. I personally wouldn't use one unless I had both the head and block surfaced to cometic's specification. You'll have to be making more than 550whp to lift a ka head using arp studs or detonate the shit out of your motor to burn up an oem gasket but even then chances are a piston will go first. Put an oem or felpro gasket on it and call it a day. Don't forget to check the head from straightness before you put it back on. If it's not withing spec, have it surfaced. If not you'll be doing this all over again and posting up a thread about how much ka's suck after you just "rebuilt" yours and it blew up a week later.

 

^ Thanks I really appreciate the input, If I don't buy this assembled bottom end then I will have my block honed. When you mentioned that copper spray being used on the headgasket, if I somehow managed not to make a mess with the high temp copper silicon could I use that?

 

that copper spray stuff and the copper rtv are two different things. As i understand it.
I also understand it that the copper stuff is a waste. The gasket is either going to seat and seal, or it isn't. The copper stuff isn't going to make a difference.
any time it has ever been even a little questionable, I've had the head resurfaced. never personally used that spray stuff.

 

The copper spray works great with the viton coating on your mls headgasket. It helps seal to the head and block if theirs any imperfections. Expecially cause you need almost a mirror-like image on the head and block. Doesnt have to be the prettiest thing, just flat and clean. The copper spray definetly DOES make a difference. It also helps stop the mls hg from leaking oil if you use really thin oil/synthetic. ALWAYS hone out a cylinder if you're installing new rings. They will never fully seat if you don't. NPR ( Nippon Racing ) is one of the best oem style parts out there and work great for most. Make sure you use the arp lube on the studs where the nuts go, and a calibrated torque wrench.

 

and if NPR makes a mls hg for ka's, go with it. They hold 30 + lbs of boost on 4g63's with arp studs.