Post #1
anyone know somewhere i can get this done??
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displaying posts 1 to 22 of 22
| Author | Subject: piston cut outs? |
 309btcc
**DODGY SELLER**  Location: england Registered: 07 Jul 2009 Posts: 530 Status: Offline |
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 Posted 7th Sep 2010 at 01:01
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rallyeash
Seasoned Pro  Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #2
welshpug had some done iirc________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 7th Sep 2010 at 01:05
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daveyboy
aka Jim Davey  Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #3
Woodmill engineering are local and could do this, you will need to centre dot the datum point for the cut out by using an old valve cutting off the head and grinding it to a point. The head will need stripping and all the valves will have to come out to allow you to centre dot the top of all the pistons. With the piston 1 at TDC (Do each one in turn) put the sharpened valve in each of the four empty valve holes with the point down and give the tip a very gentle tap with a SMALL hammer, this will accurately mark the reference point for the machinist to enlarge your cut-outs, don't just get him to use the existing cuts as a reference as looking at the witness marks where tappers hit the pistons the cut-outs seem to be in slightly the wrong place anyway (too far towards the chamber wall as the valves hit the inside edge of the cut out) You then need to repeat the process for pistons 2,3 and 4. Radial clearance (The gap from the outside edge of the valve to the side of the cut-out needs to be at least 1mm and the depth wants to be a good 1.5mm from the underside of the valve to the bottom of the cut-out. Mark inlet and exhaust positions on the pistons before you remove them as it will be a pain if you forget which one is which once you have them out. The macinist will also need to know the inclination angle of the valves so he can set the cutter at the right angle, make sure he uses a round nosed cutter as you don't want a sharp edge at the bottom of the cut-out to form a stress point. Oh f*ck it, I just remembered you picked up those Omega high comp pistons did'nt you? You won't need any of the above info now! ________________________________________ 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 |
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Posted 7th Sep 2010 at 03:48
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #4
or just send them to martin price or sandy brown who have jigs to do this already  ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 7th Sep 2010 at 04:14
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #5
welshpug! wrote: or just send them to martin price or sandy brown who have jigs to do this already Yeah, that's probably a lot easier   ________________________________________ 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 |
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Posted 7th Sep 2010 at 04:17
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phillipm
Seasoned Pro  Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #6
I will admit to having cracked the dremel out once and done them freehand for a V6 set on a budget*...*The above advice is not endorsed or recommended by the user, and damage is your own bloody fault for trying to copy me being a pikey, I accept no liability for you being a lesser pikey. ________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 7th Sep 2010 at 04:18
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #7
 ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 7th Sep 2010 at 04:19
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #8
Pikey masterclass 101 ________________________________________ 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 |
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Posted 7th Sep 2010 at 04:21
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #9
You can also braze a lathe insert to a couple of spare valves and do it in-situ with a stop on the valve stem*  *Previous disclaimer applies ________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 7th Sep 2010 at 04:24
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #10
Are you going to have to travel the country killing us all now that you are revealing all this classified info?   ________________________________________ 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 |
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Posted 7th Sep 2010 at 04:27
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #11
I'm afraid I'll have to, top secret race info that, better sort out your affairs.________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 7th Sep 2010 at 04:27
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #12
phillipm wrote: I'm afraid I'll have to, top secret race info that, better sort out your affairs. Too late for that, I'm leaving my unfinished project to the forum at large, good luck fellas  ________________________________________ 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 |
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Posted 7th Sep 2010 at 04:30
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #13
Shit, now the whole forum's gonna get sucked into a blackhole for credit cards...________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 7th Sep 2010 at 04:31
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #14
phillipm wrote: Shit, now the whole forum's gonna get sucked into a blackhole for credit cards... A problem shared... ________________________________________ 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 |
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Posted 7th Sep 2010 at 04:34
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #15
All that'd happen is the entire forum would be locked in a battle about whether it should be 30mm lower or 40mm lower, and spend 2 years shouting c*nt! at each other, whilst rallyestyle fitted some dodgy LED front running lights so it looked faster...________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 7th Sep 2010 at 04:37
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #16
phillipm wrote: All that'd happen is the entire forum would be locked in a battle about whether it should be 30mm lower or 40mm lower, and spend 2 years shouting c*nt! at each other, whilst rallyestyle fitted some dodgy LED front running lights so it looked faster... Probably! If you attack my Wossners with a Dremmel I'll come back and haunt you  ________________________________________ 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 |
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Posted 7th Sep 2010 at 04:39
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #17
 ________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 7th Sep 2010 at 04:42
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #18
phillipm wrote: Step away from the power tools, I went over em and could'nt find a sharp edge or a bit of spare ally on them anywhere ________________________________________ 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 |
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Posted 7th Sep 2010 at 04:45
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #19
I'm sure they could be lighter....________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 7th Sep 2010 at 04:50
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #20
phillipm wrote: I'm sure they could be lighter.... Definitely, but would they still be reliable? And I don't mean could I rely on thm to fail? ________________________________________ 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 |
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Posted 7th Sep 2010 at 04:52
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #21
pfft, it's not fun unless every time you head towards the redline you start watching for dents in the bonnet.________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 7th Sep 2010 at 04:56
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daveyboy
aka Jim Davey Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #22
True, it's the acompanying dents in the bank balance that ruin the fun for me though...________________________________________ 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 |
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Posted 7th Sep 2010 at 15:24
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