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| 12 or 18 HP http://www.international2cvfriends.com/forum/viewtopic.php?f=7&t=5594 |
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| Author: | H Clew [ March 22nd, 2015, 5:32 pm ] |
| Post subject: | 12 or 18 HP |
I'm working on my spare engine. I'm pretty sure it's the correct one for the car. By bore and stroke, it's a 425. What is the defining difference between the 12 and 18 HP engines? I have the 4 stud heads, but the Solex 28 carb is a small throat, about 17 mm at the narrowest. David |
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| Author: | AZL57 [ March 22nd, 2015, 6:35 pm ] |
| Post subject: | Re: 12 or 18 HP |
12 HP has 3 stud heads. Solex must be correct the 12 HP has a solex 26. |
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| Author: | H Clew [ March 22nd, 2015, 8:07 pm ] |
| Post subject: | Re: 12 or 18 HP |
Thank You That's what I thought about the heads, but I don't know enough to say with certainty. David |
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| Author: | ken [ March 22nd, 2015, 9:16 pm ] |
| Post subject: | Re: 12 or 18 HP |
Further to AZL's post, venturi on a Solex 28 as fitted to 12HP (A53 engine) was 22mm, a Solex 32 on an 18HP (A79/0 engine) would have been 28mm. The engines also have different compression ratios, which Citroen usually marked on the piston crowns, 7.5:1 for the earlier engine & 7.75 for the later. |
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