| [ Total Views: 797 | Total Replies: 4 | Thread Id: 106052 ] |
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 hulbyw
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| posted on May 14th, 2014 at 08:55 PM |
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1776 or 1956
A few questions for the engine builders out there.I have most parts to build a 1776 including 90.5 pistons. I am now considering adding a 76mm stroker
crank but have a few questions. Firstly, can I use a stroker crank with A type pistons?
Second, I have a single Weber 40DCN and stock size valve heads that have been mildly ported. Would these be ok with a 1956 or am I wasting my money
stroking it and using those parts still?
Cheers...........Wayne
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psimitar
Son of Jim - Creator of Good
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| posted on May 15th, 2014 at 08:24 AM |
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I'm unsure of the A pistons but IMO going big with the case is never a waste of money cos altho the single carb and smaller valves will strangle the
engine a bit, these are external parts that can be easily upgraded down the line whereas if you don't do the machining etc to the case then any
further mods to engine size will cost more in the long run.
madness is in the eye of the beholder  |
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fish26
A.k.a.: benito
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| posted on May 15th, 2014 at 10:02 AM |
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Wayne, usually there's no substitute for size, you can use A pistons with 76mm crank and stock rods but due to the cylinder spacers you will have a
wide engine that carries with it it's own set of problems eg. Space restriction in the engine bay, exhaust choice, intake runner modification,
cooling shroud modification, etc.
All in all if both engines are built the same, they will perform almost the same.
Ben
bitten by the bug..........several times
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RodPenrose
A.k.a.: Rodney Penrose
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| posted on May 15th, 2014 at 11:15 AM |
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Wayne , the A pistons can be used with the 76 mm crank , however the engine will end up around 5-6 mm wider than stock . When I use the 76 mm cranks I
use the B pistons and a longer conrod to get the engine width to the std specs. along with the chevy journals so clearancing the case is at a minimum
. I think that the single carb and stock sized valves would be quite a restriction if you are building for power , however it will produce a lot of
torque if this is where you are heading . I would stay with the stock stroke as you will end up with a much nicer all round good engine with the 1776
cc size , ROD.
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au
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hulbyw
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| posted on May 16th, 2014 at 08:44 PM |
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Thanks guys. I will save the money from not buying the stroker crank and con rods and put it towards the paint job
Cheers..........Wayne
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