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Author Subject: Daveyboy's Rallye Race car
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #701
rich_w wrote:
I think the standard head chamber volumes are around 38cc in the head alone.

Jim - I wrote an Excel spread-sheet for calculating compression ratios on this engine for when I was building my engine [and others].

If you want I could pop over one eveing, could plug your figures in?

I may end up having to mill some material off the tops of the pistons to get the chamber volume back something like right.


Smile


Well if thats the case I need to find about 4-5 more ccs, and the head has'nt even been skimmed yet! Crazy

________________________________________

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
Posted 15th Apr 2010 at 15:53
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bobdylan_55

Seasoned Pro

Location: derby

Registered: 28 Mar 2009

Posts: 1,466

Status: Offline
Post #702
daveyboy wrote:
rich_w wrote:
I think the standard head chamber volumes are around 38cc in the head alone.

Jim - I wrote an Excel spread-sheet for calculating compression ratios on this engine for when I was building my engine [and others].

If you want I could pop over one eveing, could plug your figures in?

I may end up having to mill some material off the tops of the pistons to get the chamber volume back something like right.


Smile


Well if thats the case I need to find about 4-5 more ccs, and the head has'nt even been skimmed yet! Crazy


get the bowls worked is the best option as you dont really want to be machining them pistons or adding spacer plates. I surpose you could take a tiny bit off the top of the piston, but would probably wreck the squish area and design of them. just get the bowls opened up slightly.

________________________________________

309 GTi6-T
Posted 15th Apr 2010 at 16:23
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #703
bobdylan_55 wrote:
daveyboy wrote:
rich_w wrote:
I think the standard head chamber volumes are around 38cc in the head alone.

Jim - I wrote an Excel spread-sheet for calculating compression ratios on this engine for when I was building my engine [and others].

If you want I could pop over one eveing, could plug your figures in?

I may end up having to mill some material off the tops of the pistons to get the chamber volume back something like right.


Smile


Well if thats the case I need to find about 4-5 more ccs, and the head has'nt even been skimmed yet! Crazy


get the bowls worked is the best option as you dont really want to be machining them pistons or adding spacer plates. I surpose you could take a tiny bit off the top of the piston, but would probably wreck the squish area and design of them. just get the bowls opened up slightly.


I don't think shaving a few mm off the tops of the pistons will make an awful lot of difference to the burn rate, they have a large rectangular flat section in the centre, I would just take some material from the top of that if necessary. First things first though, I've got to go over all the measurents again and make sure I have'nt gone drasticly wrong as thie figures are a long way from where the piston manufacturer says they should be.

________________________________________

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
Posted 15th Apr 2010 at 16:38
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,839

Status: Offline
Post #704
37.5cc iirc sandy said, 36cc with a max skim of 0.25, more can be removed but its not sensible to do so as you get close to the valve seats.

1.2mm gasket as mentioned, repair gasket is 1.4mm.

________________________________________

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

Bring on the Trumpets.

Posted 15th Apr 2010 at 20:16
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #705
welshpug! wrote:
37.5cc iirc sandy said, 36cc with a max skim of 0.25, more can be removed but its not sensible to do so as you get close to the valve seats.

1.2mm gasket as mentioned, repair gasket is 1.4mm.


I definitely don't want to remove anymore than is absolutely necessary from the head, I have a horrible feeling I'm going to have too much compression as it is...

________________________________________

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
Posted 15th Apr 2010 at 21:41
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chris with a pug

Seasoned Pro

Location: Southampton

Registered: 16 Feb 2003

Posts: 5,366

Status: Offline
Post #706
daveyboy wrote:
welshpug! wrote:
37.5cc iirc sandy said, 36cc with a max skim of 0.25, more can be removed but its not sensible to do so as you get close to the valve seats.

1.2mm gasket as mentioned, repair gasket is 1.4mm.


I definitely don't want to remove anymore than is absolutely necessary from the head, I have a horrible feeling I'm going to have too much compression as it is...


but think how quick it will be in the 10mins before it blows up LOLRazz
Posted 15th Apr 2010 at 21:46
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #707
chris with a pug wrote:
daveyboy wrote:
welshpug! wrote:
37.5cc iirc sandy said, 36cc with a max skim of 0.25, more can be removed but its not sensible to do so as you get close to the valve seats.

1.2mm gasket as mentioned, repair gasket is 1.4mm.


I definitely don't want to remove anymore than is absolutely necessary from the head, I have a horrible feeling I'm going to have too much compression as it is...


but think how quick it will be in the 10mins before it blows up LOLRazz


Are you talking about yours Chris? Razz

________________________________________

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
Posted 16th Apr 2010 at 01:20
Profile
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #708
Update from Guy Croft today, my valve guides are made and inserted, work can now begin on valve seats and the valves themselves.

Here are some pics. (For some reason he thinks its an S16, but I have'nt had the heart to correct him!)



















Starting to get excited about bolting this back together 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
Posted 6th May 2010 at 04:34
Profile
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #709
Got my oil pump rebuild kit from Rich W yesterday too, so next week the block will be %100 finished. Good times Smile

Looks like I'm going to end up with a CR more like 13:1 but I'm told this won't be an issue as long as it's mapped very prescisely and I stick to high octane fuel.

________________________________________

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
Posted 6th May 2010 at 15:32
Profile
chris with a pug

Seasoned Pro

Location: Southampton

Registered: 16 Feb 2003

Posts: 5,366

Status: Offline
Post #710
how much was the kit? what is in it?
Posted 6th May 2010 at 21:41
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #711
chris with a pug wrote:
how much was the kit? what is in it?


No idea as I have'nt seen a bill yet, I got a piston, a gasket and a spring, plus a new drive chain.

________________________________________

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
Posted 7th May 2010 at 01:48
Profile
chris with a pug

Seasoned Pro

Location: Southampton

Registered: 16 Feb 2003

Posts: 5,366

Status: Offline
Post #712
I had a spare gasket here!!!! dofus.
Posted 8th May 2010 at 01:58
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #713
chris with a pug wrote:
I had a spare gasket here!!!! dofus.


I still needed the piston and spring Razz

________________________________________

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
Posted 11th May 2010 at 01:53
Profile
chris with a pug

Seasoned Pro

Location: Southampton

Registered: 16 Feb 2003

Posts: 5,366

Status: Offline
Post #714
they are pennies! the gasket about 8 quid
Posted 11th May 2010 at 01:58
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #715
chris with a pug wrote:
they are pennies! the gasket about 8 quid


Well why did you buy two then? Crazy

________________________________________

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
Posted 11th May 2010 at 14:33
Profile
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #716
39.6cc is the chamber volume I have ended up with, so it looks like I won't have a CR that is too mental after all, that's a relief! (Thats before skimming, but that won't change it by much)

________________________________________

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
Posted 12th May 2010 at 04:29
Profile
chris with a pug

Seasoned Pro

Location: Southampton

Registered: 16 Feb 2003

Posts: 5,366

Status: Offline
Post #717
daveyboy wrote:
chris with a pug wrote:
they are pennies! the gasket about 8 quid


Well why did you buy two then? Crazy


I got one in the gasket kit, but had already rebuilt the oil pump
Posted 11th May 2010 at 20:19
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #718
chris with a pug wrote:
daveyboy wrote:
chris with a pug wrote:
they are pennies! the gasket about 8 quid


Well why did you buy two then? Crazy


I got one in the gasket kit, but had already rebuilt the oil pump


Are we talking about that stainless shim type gasket?

________________________________________

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
Posted 11th May 2010 at 21:57
Profile
chris with a pug

Seasoned Pro

Location: Southampton

Registered: 16 Feb 2003

Posts: 5,366

Status: Offline
Post #719
the one that goes in the middle of the pump yeah!
Posted 11th May 2010 at 21:59
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #720
I'll check with you next time I order anything then Big grin

________________________________________

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
Posted 11th May 2010 at 22:00
Profile
chris with a pug

Seasoned Pro

Location: Southampton

Registered: 16 Feb 2003

Posts: 5,366

Status: Offline
Post #721
I have doubles of most things!!
Posted 11th May 2010 at 22:01
Profile
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #722
chris with a pug wrote:
I have doubles of most things!!


Including chins Shut up LOL

________________________________________

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
Posted 14th May 2010 at 02:09
Profile
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,839

Status: Offline
Post #723
its had some material taken from the chamber then, 37.5 IIRC is standard, down to 36cc if skimmed 0.25mm, much more and you get rather close to the valve seats.

when is it all going together?

________________________________________

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

Bring on the Trumpets.

Posted 14th May 2010 at 02:31
Profile
ken

Senior User

Location: wokingham

Registered: 28 Mar 2007

Posts: 905

Status: Offline
Post #724
love this build! Big grin


if anyone knows which i expect you all do lol!

abouve th epower steering tank, there is a breather pipe leading to the manifold and wires etc,
do i need them mate as i notced you removedd/relocated them!

just curious thankyou Big grin

________________________________________

Team Black Rallye Big grin
xbox live - Xx 7 kenny 7 xX

Posted 14th May 2010 at 03:16
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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline
Post #725
welshpug! wrote:
its had some material taken from the chamber then, 37.5 IIRC is standard, down to 36cc if skimmed 0.25mm, much more and you get rather close to the valve seats.

when is it all going together?


Yeah, by me, I de-burred it, got rid of anything sharp and gave the casting marks a little cleanup and de-coke. Guess a little material removal translates to a fair sized change in volume in a chamber that size.

________________________________________

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
Posted 14th May 2010 at 18:30
Profile
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