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Murt Samba Member
Joined: October 01, 2017 Posts: 318 Location: Kent, England
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Posted: Fri Apr 19, 2024 1:36 am Post subject: Perspex cc measuring rings |
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Hi Chaps
Can anyone help me with a quick question ?
I was going to buy a cc measuring kit, the 3 circles and the syringe. and I don't intend to pay £65 ($81)!!!!! for it, and would rather buy some ready cut Perspex circles over here in the UK.
Can anyone here who has a set, (Guessing 80.5/90.5/94 ??) tell me the exact diameters of the discs please
TIA
Dave _________________ 1966 VW Beetle ‘Jules’
1967 Kombi Splitscreen ‘Barney’
2018 VW Caddy Maxi R Line
2017 Golf GTD saloon
2008 VW EOS 2.0 TFSi |
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modok Samba Member
Joined: October 30, 2009 Posts: 26887 Location: Colorado Springs
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Posted: Fri Apr 19, 2024 4:40 am Post subject: Re: Perspex cc measuring rings |
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it needs to be larger than the piston but smaller than the counterbore so it fits in the head.
slightly smaller than the top of the cylinder would be a good bet.
exact size?, not sure what an exact size is...., (I guess it's an imaginary concept.,.....?)
Didn't know who makes kits of these
But I have heard of perspex, we call it plexi-glass, but it's more generally known as clear acrylic plastic sheet
but anyway
here are some popular sizes of cylinder bore and OD of cylinder, nominal sizes
77-89.8
83-93.8
85.5-93.8
88-95.4
90.5-97 (early thinwall)
90.5-98 (most 90.5)
92-98
92-101 (AA thickwall 92)
94-101
I prefer having the hole near the edge, but if you go with a hole in the center then it's easy to mount on your lathe and trim round |
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richparker Samba Member
Joined: November 24, 2011 Posts: 7029 Location: Durango, CO
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Glenn Mr. 010
Joined: December 25, 2001 Posts: 77173 Location: Sneaking up behind you
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Millionmph Samba Member
Joined: November 22, 2021 Posts: 327
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Posted: Fri Apr 19, 2024 8:04 am Post subject: Re: Perspex cc measuring rings |
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You can get the syringes for like $5 on amazon and for the disc I used a plastic lid and cut to size, cost $0 |
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glutamodo The Android
Joined: July 13, 2004 Posts: 26358 Location: Douglas, WY
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Posted: Fri Apr 19, 2024 8:21 am Post subject: Re: Perspex cc measuring rings |
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You want cheap?
I used to make my own CC Kit by salvaging computer related stuff. Repurposing the clear plastic spacer disks that were included in sleeves of blank CD-R and DVD-Rs, cutting them down to fit. And repurposing the syringes that came in InkJet Printer Cartridge Refill Kits. Stuff I had just lying around, zero cost except time. http://members.trainorders.com/android/VW12up/PoorMansCCKit-CDInsertDisksPlusInketSyringes.jpg _________________ Andy T.
IMAGE NOTE: Apologies for the thousands of images I have embedded into my posts here. They are hosted on a non-secure FTP server (I have inquired, got no response as to improving this) and modern browsers now reject such images as unsafe. If you quote my old posts, you'll see the image links and they still work fine and are safe. |
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garym999 Samba Member
Joined: November 26, 2022 Posts: 112 Location: Oxfordshire, UK
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Posted: Fri Apr 19, 2024 11:01 am Post subject: Re: Perspex cc measuring rings |
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If you know someone with a 3D printer should be easy to make, just a thought _________________ 1975 South African Fleetline |
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lner JP Samba Member
Joined: March 09, 2024 Posts: 6 Location: UK
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Posted: Fri Apr 19, 2024 11:45 am Post subject: Re: Perspex cc measuring rings |
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If you look on coolairvw website you can hire the discs for £5.50, that's what I planned to do when I get round to my build.
JP |
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jpaull Samba Member
Joined: February 22, 2005 Posts: 3485 Location: Paradise, Ca
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Posted: Fri Apr 19, 2024 12:05 pm Post subject: Re: Perspex cc measuring rings |
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Because our poster is in England, that CC kit that is $37 turns into $80 real fast once all the shipping/fees are paid. Its really not hard to make something that gets the job done perfectly. _________________ [email protected] MPH 1/4 Mile & 8.1 @ 83.7MPH in 1/8 Mile with Mild Type 1 VW Mag Case 2234cc commuter engine in stock weight bug w/only .491 total lift(CB2292 Cam), 42x37 heads, 48idf's, Street tires, Belt on, Mufflers, Pump gas, video of the run here: https://youtu.be/M3SPqMOKAOg
Transmission by MCMScott:
Rhino case, Klinkenberg 4.12, Superdiff, 002 mainshaft with 091 first idler. Weddle 1.48 Third & 1.14 Fourth. |
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Zed999 Samba Member
Joined: March 04, 2018 Posts: 1265 Location: UK
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Posted: Fri Apr 19, 2024 1:45 pm Post subject: Re: Perspex cc measuring rings |
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Being also in the UK I found I could peel the colour layer off an old licence plate leaving clear perspex.
99p for a syringe from the local chemist was every bit as accurate as the fancy burette I bought to check the syringe. lol |
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Murt Samba Member
Joined: October 01, 2017 Posts: 318 Location: Kent, England
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Posted: Sat Apr 20, 2024 3:13 am Post subject: Re: Perspex cc measuring rings |
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Thanks Chaps for the responses
I'm not a cheapskate by any means but as said earlier if I order one here it's $80 bucks, or as also said, I can hire it for ~$7 but the site below, will make them for peanuts, and as @modok said, I can even have the hole made where I want.
I have just ordered a set of the AA 88's machine in, and wanted to be able do deck height and to CC my heads as well for when I put it all together. The heads will need to be opened up to take 90.5, but I wanted to know the size of the discs that come in the kit if that makes sense ? anyway at the price of the discs, I may make up a couple of sets syringes on Amazon are dirt cheap as well
https://www.perspexsheet.uk/perspex-disc/ _________________ 1966 VW Beetle ‘Jules’
1967 Kombi Splitscreen ‘Barney’
2018 VW Caddy Maxi R Line
2017 Golf GTD saloon
2008 VW EOS 2.0 TFSi |
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Zed999 Samba Member
Joined: March 04, 2018 Posts: 1265 Location: UK
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Posted: Sat Apr 20, 2024 4:31 am Post subject: Re: Perspex cc measuring rings |
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Bargain!
I think your best bet is to get the heads in your hands and measure yourself. |
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