100mm Wiseco Ring Gap Specs Needed... Wiseco Engine Builders Please Help

[Hayaboosted]

Ok.. well i called Wiseco looking for Ring gap for 100mm wisecos. Told them this was on a modified Subaru. Aprx. 500whp. They gave me .003 piston to wall clearance which i believe is correct. However they told me that the top ring gap is .020-.022' and the 2nd at .016-.18".

Well my engine builder has now filed them specs that the Tech department at Wiseco told me.. however one of the guys at my engine shop said the 2nd is always larger then the first.

What are shops running these Wisecos at?? Im going to be pretty upset with wiseco if they told me wrong and I have to purchase a new set and than pay for my builder to refile them. I even double checked with the wiseco guy... guess i should get names next time.

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[Storm]

Look at what you typed, what you're asking, and what they told you.

You typed:

the top ring gap is .020-.022' and the 2nd at .016-.18".

Maybe it's the punctuation flaws or maybe something else. I can't make heads or tails from what you typed. There's a big gap between .016" and .180".....

Jay

[Hayaboosted]

Originally Posted by Storm

Look at what you typed, what you're asking, and what they told you.

You typed:
Maybe it's the punctuation flaws or maybe something else. I can't make heads or tails from what you typed. There's a big gap between .016" and .180".....

Jay

Ya.. obviously its .018"

[Hayaboosted]

Here guy's. Did a few hours of researching. This is from Wiseco

Ring Gap Table Instructions
1) Cylinder bore size must be in inches. If measuring millimeters, divide
bore by 25.4.
2) Multiply your bore size by the “x Bore” column for your application.


Min. Gap Per Inch of Bore
Top Ring 2nd Ring Oil Ring Rail



______________________________Top Ring____ 2nd Ring_____ Oil Ring Rail
Application____________________Bore x ........ Bore x .........Min. Gap
High-Perf. Street/Strip ............... .0040” ......... .0050” ........... .015”
Street-Moderate Turbo/Nitrous .. .0050” ......... .0055” ........... .015”
Late Model Stock ....................... .0050” ......... .0053” ........... .015”
Circle Track/Drag Race ............. .0055”.......... .0057” ........... .015”
Nitrous Race Only ...................... .0070” .......... .0073” ........... .015”
Blown Race Only ....................... .0060” ......... .0063” ........... .015”

NOTE: The chart above is a general end gaps guideline. Each ring should
be fi tted to the particular cylinder in which they are to be installed. The
gap on the 2nd ring should always be larger than the top ring end gap,
this will help
reduce top ring
fl utter.


http://www.wiseco.com/Catalogs/Sport...ccessories.pdf

Above is the link. Scroll to the end of page.. gives you great info

[Hayaboosted]

Well from what my calculations are.. Wiseco Told me in the reverse order.. This is how it should be

Wisecos Hi Performance. Street/Strip setup Would be:
Top Ring @ .016"-.018" & 2nd ring @ .020"-.022"

Now basically to salvage my entire ring set I would be using their Street-Moderate Turbo
setup. Which calculations say are:
Top Ring @ .020" - .022" & 2nd Ring @ .022"-.024"



Do you think its safe to use the Street-Moderate Turbo Setup from the Chart in the previous post?

Here is my current Setup
EJ257
100mm Bore
Wiseco Pistons
Manley Rods
Balanced Blue Printed
ARP Head Studs
BC Valve spring & Retainers
BC 280 Cam
ACL Main & Rod Bearings
Cosworth Oil Pump
Forced Performance Green turbo Possible moving to GT35-40 End of year
Will be planning on tuning on Meth and race fuel

[mick_the_ginge]

I do 22 thou top, 18 thou second (build boost between the two)

Cosworth does 15 thou top, 20-22 thou second

I've done 26/26 thou before as well (medium blowby with that setup)

[Hayaboosted]

So wiseco was right?

[RealStreet]

The second ring is always larger than the top. What ever charge gets past the first ring needs to get past the second to avoid flutter. Most manufactures have moved into putting accumulator grooves between the two rings to add some volume to avoid flutter.

What raises some real questions is how tight can we go from the spec that has been used for years that had cast iron blocks in mind. If you disassemble a new stock subi short you will find the rings butted. Clearly the bore grows away from the piston as the engine takes on heat. For those of you that have machined on a EJ block you have seen just how dynamic they are.

In the end you want them as tight as they can be without butting and/or trapping gas between the two.

Jay Meagher

[Hayaboosted]

so no one knows anything.. weird..

[RealStreet]

Originally Posted by Hayaboosted

so no one knows anything.. weird..

What part of my answer was unclear?

[Hayaboosted]

Really did you read the entire thread? I know the order and placement of my rings. I now need to know if the ring gap of

Top Ring @ .020" - .022" & 2nd Ring @ .022"-.024"

Would be an ok setup.

Or should I be calling Wiseco to send me some new rings on them?


Your post mentions nothing about spec.. Clarify?

[mignotta9243]

hello Hayaboosted !am doing wiseco piston to but i need to know the ring gap to ! tanks

[RealStreet]

Sorry I was trying to shead some light on the subject.

Your numbers of .020/.022 top ring and .022/.024 is fine. As long as the second is bigger than the first.

Jay Meagher

[WrXtaCy2003]

ive done 18 on top and 20 on 2nd for all my builds. Compression is consistently 170psi on all builds, no cylinder scoring either, no/minimal blowby. This is with 100mm wisecos, hybrid setup, stock sti headgasket.

DK

[Hayaboosted]

Ok guys ur not reading the thread. The rings have already been filed in the wrong order because wise co screwed up.

[Bamofo]

we do .018 on the top and .020 on the bottom for whiny people that dont like burning any oil due to blow by. and .020 on top .022 on bottom for normal people

[Hayaboosted]

Originally Posted by WrXtaCy2003

ive done 18 on top and 20 on 2nd for all my builds. Compression is consistently 170psi on all builds, no cylinder scoring either, no/minimal blowby. This is with 100mm wisecos, hybrid setup, stock sti headgasket.

DK

. As said before the rings have already been filed making that not possible.

[Hayaboosted]

Originally Posted by Bamofo

we do .018 on the top and .020 on the bottom for whiny people that dont like burning any oil due to blow by. and .020 on top .022 on bottom for normal people

Thanks much help

[RealStreet]

If you don't want to buy a new ringset which is ($85) then you will need to go .022" on the top and .024" for the second.

[hustleshark206]

Just have your builder re-gap the second rings to .024 and you should be good to go. Probably burn some oil as mentioned above.

[Hayaboosted]

I think im going to try and go 20 and 22

[RealStreet]

Originally Posted by Hayaboosted

I think im going to try and go 20 and 22

You will be fine with that man.