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 VolksFolks
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| posted on April 5th, 2005 at 08:22 PM |
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1614 to 1300
I have been asked a question but i dont know the answer, they have a 1300 motor, and also have a 1641 kit, they would like to fit the 1641 pistons to
the 1300 case/heads, does the case need work, does the studs need changing, and does the head need machining, if so what sorta costs are involved.
Thanks Andy
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 Bizarre
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| posted on April 5th, 2005 at 09:10 PM |
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no yes sort of ....... :jesus
OK... the case doesnt
Yes - the studs do
No - i dont think the heads do BUT the valves are a different sive to a 1600 motor so just be aware.
Dunno what diff it makes.
The late 1300 twin port with small valves sreamed so i cant answer
I guess its half an answer
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Chewy
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| posted on April 5th, 2005 at 09:23 PM |
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I dont think the actual 1300 heads will slip onto the 1641 cylinders, that only works going from 1600-1641
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Menangler
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| posted on April 5th, 2005 at 09:39 PM |
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The 1300 case will fit the 1641 barrells, the head studs are fine, but the cylinder heads will need to me machined to fit the bigger barrells, and
then you will need to work out your compression ratio, and run the correct thickness barrell shims.
If you are doing this to an old 1300 engine, it would pay to rebuild the whole engine, because the 1641 barrells will kill the poor old 1300 bottom
end very soon.
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Bizarre
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| posted on April 5th, 2005 at 09:47 PM |
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| Quote: | Originally
posted by Dave Becker
, the head studs are fine,
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hmmm.... of course..... the old heads are going back on :thumb
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VolksFolks
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| posted on April 5th, 2005 at 09:51 PM |
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Thanks Guys, Thought as much, 1500 heads will be the go then, good on ya's
Andy
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Chewy
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| posted on April 5th, 2005 at 09:53 PM |
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| Quote: | Originally
posted by Dave Becker
If you are doing this to an old 1300 engine, it would pay to rebuild the whole engine, because the 1641 barrells will kill the poor old 1300 bottom
end very soon.
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I was under the impression that a 1300 bottem end was the same as a 1600 and better to build up to 1600/1641/1716 etc because the bottem end would
have had a less stressful life than a 1600?
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VolksFolks
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| posted on April 5th, 2005 at 09:55 PM |
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Me too, will take the risk i reckon..
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VWCOOL
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| posted on April 5th, 2005 at 10:34 PM |
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Yeah but new rings and the right comp means more stress for a 200,000km bottom end... BOOOOM! Seen it happen plenty...
Pay your debts, CxxT
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Bizarre
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| posted on April 6th, 2005 at 08:24 AM |
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I think it also more refers to the late dual port 1300's - the 1974 on ones
pretty sure they were dual relief etc etc just 1300
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matara
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| posted on April 6th, 2005 at 09:17 AM |
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If your case number starts AB then you will have a 1300 Twin port which will happily accept 1641 or 1600 Barrels and Pistons without maching. If your
engine number has no prefix and is just a number then you have a 1965/67 1300 which is basically a bigger bore 40hp engine which doesnt readily accept
1600/1641 B+P's
Cheers
Steve
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Menangler
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| posted on April 6th, 2005 at 10:39 AM |
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Steve,
An "F" prefix 1300 case will accept 1641 barrells with out machining.
They are single relief cases and most have done lots of miles, if you don't freshen up the bottom end it will not last.
FAHRVERGNUGEN;
Description of a pleasurable sensation,
Experienced when a car and it's driver are in mutual harmony, A unique driving experience, Pleasure, Satisfaction,
A feeling experienced by Volkswagen Drivers.
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