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[ 4 posts ] |
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H Clew
2CV Fan
Joined: February 5th, 2014, 1:39 am
Posts: 35
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 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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| March 22nd, 2015, 5:32 pm |
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AZL57
Firing on two.
Joined: October 22nd, 2014, 10:59 pm
Posts: 2197
Location: South-Limburg
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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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| March 22nd, 2015, 6:35 pm |
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H Clew
2CV Fan
Joined: February 5th, 2014, 1:39 am
Posts: 35
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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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| March 22nd, 2015, 8:07 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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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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| March 22nd, 2015, 9:16 pm |
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