BadLtBlu99TA

iTrader: (9)

I have 4.005 bore pistons for my LS2 and 4.000 Ring Kit that Diamond pistons sent me , but my question is . Is there a certain Way the The Piston Rings go ? top ring and 2nd Ring , i have 2 red spot on the Face of the top and second ring , what way do these rings go .. i know the oil ring , but i was just wondering the top and 2nd rings , so please somone help me ASAP !! thanks !

LS1MCSS

iTrader: (18)

Every set of rings I have ever purchased came in a box with the instructions included. Look at the paper the rings were wrapped in. It should be there.

V8Rumble

iTrader: (9)

If not, I'd be shocked if the instructions aren't on their website. I seem to recall seeing them somewhere...

BadLtBlu99TA

iTrader: (9)

THanks alot . Now what is the maximum Clearance Alloud Of the Piston sticking out of the top of the Cylender ? Cause i have 6.125 rods .. and i was supposed to get 6.100 rods .. what can i do about this ?

WE TODD DID

iTrader: (2)

They shouldn't come above the deck at all, especially .025. You can get away with a little, but not that much. Either get the right rods, or the a .025 thicker head gasket.

IH8FORD

iTrader: (6)

Stock Ls1's pistons come out of the hole .005-.010 factory. But .025 is probally too much u may need a thicker head gasket.

BadLtBlu99TA

iTrader: (9)

Well there is a # on the side in the middle of the rod that says SCAT6125 . bUT scat says thats its not a 6125 rod its a 6100 rod that i have they say 6125 is the kind of forged material they use for there 6100 rods and 6125 rods. how could i measure the piston that sticks out above the deck at the top?

And I have Diamond forged Pistons with a 1.340 compression height .but where could i find information to do with how to put the top and 2nd ring ojn the piston, cause i knwo there is a certain way they go on , They both have red marks on the front of the ring..


How easy would it be to blow a head gasket that was .025 thicker ?

Wnts2Go10O

iTrader: (12)

4.000" rings and 4.005" pistons. wouldnt they be off just enough to messup the clearances?

Busted Knuckles

If you have moly rings, the top ring will be shiny. If not, you need moly rings, plain cast won't last. Every ring I've seen goes with the marker facing up. 6.125 is the rod length. They're made of 4340 steel, sounds like somebody is trying to jerk you around on the numbers. Find a performance shop, they'll be able to measure 'em. I assume your block has been honed - they don't come with any hone from the factory. Since most pistons are .005 - .010 out of the hole, yours will be .030 - .035. Swap 'em now while they're new before you get into more expense.
Sounds like you need to find someone who's been thru an LS build to give you a hand, there's not anything in a build that can be taken for granted, IMHO.
Good luck!

Andrew91GT

iTrader: (6)

On my total seal rings, the top ring chamfer faces up and the 2nd ring chamfer faces down. The instructions said that the dot faced up in both cases, so if you have two rings with dots, you should be able to determine which is which.

1999ssls1

iTrader: (71)

Your gonna need the right rod or thicker gasket for sure.

JonCR96Z

iTrader: (33)

Diamond makes different pistons for the different rod lengths. You evidently got the wrong combo. I couldn't tell you if there was a downside to running a piston that far out of the hole. I would talk to someone who really knows before just putting a thicker head gasket on.

Jon

BadLtBlu99TA

iTrader: (9)

If i run my fingernail over the deck . only the part of my fingernail gets caught on the top of the piston sticking out , my finger dont touch it .. but there on the other hand .. Diamond sent my the Pistons For a LS2 HOned out 5000 thousands bigger then stock .. MY top ring and 2nd ring , i know what one goes where as far as that goes , but i have to paint marks on the face of the ring ,but i do not what way the red paint marks are supposed to face as you are looking at the piston , if the top paint mark is supposed to face to the right as your looking at the piston or if its the left . same with the bottom ring. Now on both top and 2nds rings , i know there in a 1 rounded edge on the inner side of the ring , thats the only reason im asking this .. caus eim not too sure ..

They make some kind of tool that i can measure from the Deck to the top of the piston that it is out ? and tell how many THousand its above the deck ?

Has anyone heard of Scat Rods made out of 6125 forged material ? thats what they are tellin me


Where can i find the Torque Specs for the LS2 Engine for a 2005 Corvette on everything ?

BadLtBlu99TA

iTrader: (9)

here are the pics i have if this helps out

ScottyRocket

Why don't you call diamond and ask which way the rings go?
Call us for free at: 877-552-2112 | Fax: 586-792-1105
http://www.diamondracing.net/

Other than that... too many questions about why the right parts weren't ordered/rec'ed.... if the rods aren't right, send them back! It normally easier to get the rods swaped than the pistons.

Don't force the things you have to work if they aren't what is generally accepted as the norm....esp. pistons out of the hole.

Black X

iTrader: (9)

Have a close look at the flats on the rings not the edge but the flat, there will be a dimple or a T in the side of the ring that is to face the top. Its very small but it will be there.

As far as the pistons you have go based on your compression distance you listed with a 6.100 rod the should be .011" out of the hole.

If you have the 6.125" rods they will be .036" out of the hole.

You can purchace a tool from proform that straddles the cylinder and you can mount a dial gauge in to measure how far it sticks out.

I would not recommend running the piston .036" out of the hole.

BadLtBlu99TA

iTrader: (9)

Ok so after all the Rods are 6.100. which would it be ok to run them .011 out of the hole ? Now i see the spot on the ring that says what way they face .. that means the rounded edge will be facing up on the top ring and facing down on the 2nd ring .

Now these Rings are File to fit that diamond sent me .. now on the top ring , i squared the top ring in the hole and im getting .013 for the top ring and .015 for the 2nd ring. i used a feeler gague .. what should the specs meet on these rings ? or will i have to file them ?

RAGENZ28

iTrader: (5)

I've seen a lot of people run the piston out of the hole for a little extra performance usually it was .010, but .011 isn't much difference, make sure to check piston to valve clearance.

As far as piston gap the ring company should have specs for those rings and their applications, like naturally aspirated, blown, nitrous. You find your bore size then application and it should give you a number. Or just give them a call.

Standard gap would be about .016 on a 4" bore, .013 is on the tight side, if you're gonna spray it or have a blown / turbo setup I would run a bigger gap.

A modified street motor would run about .018 - .020, nitrous or blown it would be around .024-.028

The second ring usually has an average of .004 more gap than the top ring does.

So if you went .024 on the top ring the 2nd ring would be .028

These are just general basics, call the piston company tell them exactly what you're going to do with the motor and see what they say.

.013 / .015 sounds on the tight side to me.

Also when you put in the rings don't put the gaps together, put the oil ring on, 2nd ring on and top ring on, the top and second ring should have the gap 180* apart.

Use a piston tool or the bottom of the piston to push the ring down in the bore, don't measure the ring gap up high at the cylinder opening, use feeler gauges and when you find out the gap, file a very small amount at a time, it's some thing you have to do and check a quite a few times.

If you have a ring file tool, you can kinda estimate how many turns = how many thousandths.

BadLtBlu99TA

iTrader: (9)

yeah diamond pistons didnt send me **** on the ring end play in the cylender . idk .. im gunna have to find out somhow. where can i get a ring file tool at ?

Andrew91GT

iTrader: (6)

www.jegs.com