NO! NO! NO! Rule Number one. Don't assume anything! The top ring gaps on all my Wossners were tight or butting together. Each ot the four needed hand filing to get the perfect gap and so did two of the second rings. If you don't have sufficient clearance when the engine fires they will heat up expand and scrape themselves against your bores destroying themselves at best and damaging your lovely expensive bores at worst.
Filing rings is tricky and time consuming but is a VERY important part of the block build proccess. If you rush it, you can very easily turn your expensive 'umper'that blows combustion pressure into the crankcase wasting power and blowing by really heavily through the crankase breather system.

Rings can be filed by had or if you have access to a ring grinder use that. File from the outside of the ring inwards, take care not to drag the file backwards accross the ring as the hardened finish on the rings outer edge can chip, if this happens you will more than likely need to buy a set as I bet you won't get an individual one. Regularly close up the gap and hold the ring up to the light to check you are filing dead square, you should'nt be able to see any light through the gap. When checking the gap with a feeler guage in the bore, use the top of a piston inserted in the bore to push the ring down square.
You may find that the ring gaps are all ok, but if they are it's down to luck and a total accident. I would'nt take that chance given the care and attention to detail not to mention expense you have demonstrated so far.

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R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars

Just offset them slightly, less blow by with them opposite but you don't want the gaps overlapping.

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- Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM me
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Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces.

0.3 to 0.5mm for stock rings, dunno for Wossner ones, should say on the instructions

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

There were no insructions with the pistons!
I spent quite a bit of time trying to see if they were bevelled & gave up in the end because they looked straight, to be cautious though I installed all the rings with the markings uppermost.
I'm still struggling to believe that Wossner supply rings with undersized gaps!!!
0.3 to 0.5pm does sound a lot, when I tried my rings in my old block the gaps were 0.2mm which I thought was excessive
I struggled getting the caps off on the bench, it's going to be near on impossible on the crank!

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Get used to seeing the yellow one !!!
Team 330™
Team "no front end or engine"
Team "LIMITED EDITION" I live for the 306 sticker
Team 0-60 in 6.44 & standing qtr in 14.808 @ 94.55mph all with std engine
203bhp Corolla T-Sport daily driver stealthier than Kwai Chang Caine

You'd think that the required ring gaps would be common knowledge

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Get used to seeing the yellow one !!!
Team 330™
Team "no front end or engine"
Team "LIMITED EDITION" I live for the 306 sticker
Team 0-60 in 6.44 & standing qtr in 14.808 @ 94.55mph all with std engine
203bhp Corolla T-Sport daily driver stealthier than Kwai Chang Caine

When we did Jims pistons some of them actually touched and had no gap at all. But Daves where ok so its very Hit and miss for some reason

According to my book, and you may need to adjust these as you are on the next oversize but as a guide:

Top ring gap 86.0mm Bore 0.36mm

Second ring gap 86.0mm Bore 0.30mm

If in doubt, try contacting PEC and see if they have any suggested figures.

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R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars

Right, I dug out the ARP instruction sheet that came with my rods.

Here is the highlights:

Use ARP rod lubricant on the threads and face of the bolt

ARP reccommends using the stretch method for torquing bolts. Follow instructions for using a stretch guage. Stretch bolts to .0058-.0062.

If you do not have a stretch guage, follow these steps using the ARP moly assembly lube. Aftre rods are installed into the motor, torque bolts up to 45 ft lbs. Loosen the bolts. Torque to 45 ft lbs again. Loosen the bolts and torque to 45 ft lbs for a third and final time.

A log should be kept of the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length should be replaced.

________________________________________

R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars

Double check with Rich, but it's usual to go another .05mm bigger on the ring gaps with boosted engines - and that's at less boost than you're running.

________________________________________

- Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM me
Email me!
Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces.

It's the emissions that tends to suffer more than anything tbh.

________________________________________

- Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM me
Email me!
Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces.

I thought the 2nd ring gap was supposed to be tighter tan the 1st?

________________________________________

R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars

Peugeots own specs show the lower ring gap bieng tighter. My Guy Croft workshp manual suggests that bigger ring gaps for Turbo and Supercharged are unneccessary.
Have you thought of contacting Wossner directly to get a difinitive answer?

________________________________________

R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars