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Starting my 6 bolt build. Need opinions/answers!

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spoold

15+ Year Contributor
260
4
Dec 20, 2003
Indianapolis, Indiana
Ok so its getting near fall/winter.. which means the gsx is going under the knife.

I have a few questions that i will start with, and a few opinions i could use.

So far i have a bare block, and full head. thats about it. I want to go simple, and do 1g rods on 2g pistons, ARP hardware.


My question is:

Is it possible to bore the block .020, yet retain use of stock 2g pistons? What is needed? I get a little confused here

Can anyone make a list/link me/call me a noob to a list of gaskets/misc parts i should replace while i have the motor out?

This is basically the time where i do not know what to tell the machine shop to do. The motor will just be built for Daily driving on a PTE 50 trim.

As for the head;

I will be doing the 272/264 cams. is aftermarket springs and retainers necessary to see full benefit from the cams? If so, can anyone recommend a milder cam that can retain factory springs/retainers (remember, not going too crazy :) )
 
Also, should i just buy new OEM ringlands for the 2g pistons? Or are there better ringlands out there?
 
Ok after searching ive seen that it is NOT possible to use 2g pistons on bored out walls. So im deciding to just have it hottanked, decked and honed.

Here is my parts to do list, please.. add on if you can.

2g pistons
2g piston OEM ringlands
1g rods
ARP headstuds
ARP main studs
Cometic HG
New OEM oil pan gasket <---????
6 bolt oil pan
BS elimination kit


anything else i need or you would suggest?
 
They're called piston rings, not ringlands. Ringlands are a physical part of the piston where the piston ring is installed.

If you use ARP mains you have to get the mains line honed., because the additional torque distorts the caps.

If you use a Cometic gasket or any MLS gasket, the surface of the cylinder head and block have to be better than 50 RA. If you're machinist doesn't have a way to check RA, find one that does.

You can get 2g pistons in .020 over, I would have the machinist check the cylinders to make sure they don't need overbored. Just honing them usually isn't the best way to go

If you're using stock rods, I would reccomend getting some ARP bolts and getting the rods resized. It's cheap insurance($90 or so) in case you decide you want to push 500whp or more.

Stock springs will probably be fine with those cams as long as you don't rev it too high. You can always shim the springs to get a little more pressure.
 
GVR4592 said:
They're called piston rings, not ringlands. Ringlands are a physical part of the piston where the piston ring is installed.

If you use ARP mains you have to get the mains line honed., because the additional torque distorts the caps.

If you use a Cometic gasket or any MLS gasket, the surface of the cylinder head and block have to be better than 50 RA. If you're machinist doesn't have a way to check RA, find one that does.

You can get 2g pistons in .020 over, I would have the machinist check the cylinders to make sure they don't need overbored. Just honing them usually isn't the best way to go

If you're using stock rods, I would reccomend getting some ARP bolts and getting the rods resized. It's cheap insurance($90 or so) in case you decide you want to push 500whp or more.

Stock springs will probably be fine with those cams as long as you don't rev it too high. You can always shim the springs to get a little more pressure.

great information, that was just the type i was looking for.


Added to teh machine list then:

Check head surface/block surface for RA of better than 50 to use the cometic gasket

Main lines honed

If the block doesnt need it, then dont go .020 over? I guess im asking, if there are no gouges or anythign requiring more than a hone, theres not much more reason to go .020 over?

As for the rods, where abouts would i take them to get them resized? So ARP rod bolts and resize <--- confued on the resize part

thanks
 
Any machine shop should be capable of resizing the rods. They just hone out the ends to make them perfectly round and to spec. Sometimes they need to machine a small amount of material from the caps to be able to hone the big end to spec. It's a pretty straightforward procedure for a machinist.

If the block doesnt need it, then dont go .020 over? I guess im asking, if there are no gouges or anythign requiring more than a hone, theres not much more reason to go .020 over?

That will be determined by the machinst as well. Taper and out of round conditions in the cylinder will need to be corrected. That is the most common reason for boring a block oversized.
 
Also based on my research I have used an oilpump froma 96 hyundai sonata that uses the crank sensor. This way you wont have any issues with the random misfire associated with the cam sensor mod.
 
Also if you want to use the stock pistons in the 6bolt, just get a new set of rings, and hone the cylinders. i have done this a hand full of times and never had an issue once. If you decide to overbore, just get a new set of pistons for the 6bolt block because its gonna cost 200 or more for pistons, and to hone it will cost another 160. Do the math. I have done this before. Check it out for yourself and you will see what I am taliking about.
 
pjules said:
Also based on my research I have used an oilpump froma 96 hyundai sonata that uses the crank sensor. This way you wont have any issues with the random misfire associated with the cam sensor mod.


As per this item , i was under the impression that my dsmlink would solve that?
 
spoold said:
As per this item , i was under the impression that my dsmlink would solve that?


Yes DSMLink will solve the random miss fire issue. For the 264/272 cam combo the stockers will be fine, like was said above you can always shim them to get abit more pressure out of them. If you are running a 50 trim is there any reason that you aren't going straight up 272's? (emissions, more mid power?)
 
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