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building 186s for performance and street use
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barnsey Offline
#1 Posted : Monday, 18 December 2006 12:19:28 AM(UTC)
barnsey

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Hi Guys,
I have a 1948 vauxhall street rod as my daily driver, It has a red 202 and 5 speed supra box.I want to change the engine to a 186s, which i have just won on ebay. for $285 http://cgi.ebay.com.au/w...=330059394697&rd=1&rd=1
what I would like to do is build the 186s up to get some good performance and still retain a reasonable street use as I drive this car 7 days a week, being a daily driver I will need it to be streetable.
my 202 engine has a cain manifold and a 350 holley that is almost new, it has extractors and electronic distributer, it does not have a fan on the front of the engine and relies only on a single thermo fan mounted in behind the grill, the radiator is a aussi desert cooler item from an FJ Holden in as new condition, I would like to keep the supra box and fit it behind the 186s
where should i start with this new engine ? I have a machine shop close by that can do any machining that i need to have done.
but what should i have done to get this engine on its way to being a tuff street engine that is reliable and where should i start with the rebuild,?
what comes first ?
thanks for any help you guys can give me. it will be much appreciated
some of the things I was wondering about are.
1.what should I have the engine bored to?
2.is there any benifit in changing cranks?
3. I want to run a straight cut gear to make it sound more like a hotrod, is there any other addvantages in using straight cut gears?

Sorry if i am asking too many questions, I really just want to know where to start and in what order i should proceed with the build of this new engine,
thanks again.
cheers barnsey

Edited by user Monday, 18 December 2006 12:23:35 AM(UTC)  | Reason: Not specified
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peter_flane Offline
#2 Posted : Monday, 18 December 2006 5:32:42 AM(UTC)
peter_flane

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Personally in my opinion I would have built the 202 up. You mention changing cranks, but if you put a 202 crank and rods in your 186 you will have a 202. Boring it out to a 192 will give you about a 3% increase in capacity. Not huge really. Straight cut g
If it is old or rare - Cut it! http://www.ehlimo.com.au/
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HK1837 Offline
#3 Posted : Monday, 18 December 2006 7:06:57 AM(UTC)
HK1837

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If the 186 will run OK use it as is. But if you are going a rebuild I agree with Peter. Sell the 186S and M20 but keep the head, inlet/carby and HEI dizzy, and find a red 202 block and caps with a rope rear main seal. Get a blue or black motor crank and r
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If we all had the same (good) taste, who would buy all the Fords?
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barnsey Offline
#4 Posted : Monday, 18 December 2006 4:44:37 PM(UTC)
barnsey

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The only reason i brought the 186s was that my car is registered with a 186, but has a 202 in it at present, the rego papers read 186 and i havent changed them over to the 202 because i was worried i would have to have the car engineered.at the moment the
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HK1837 Offline
#5 Posted : Monday, 18 December 2006 11:11:53 PM(UTC)
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Makes sense now. Still, I'd then get a 202 crank's main jornals and seal journal machined down so it will fit in the 186 neoprene block. Use a blue/black crank for this and also use the blue/black rods. You'll need a 202 cam, or at least a 186 one with th
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If we all had the same (good) taste, who would buy all the Fords?
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peter_flane Offline
#6 Posted : Tuesday, 19 December 2006 3:58:07 AM(UTC)
peter_flane

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Personally I would use the red crank as it is lighter, therefore picks up revs quicker, and with a dynamic balance the torsional vibration issues are relieved. Using blue motor conrods

Remember Bathurst was won by Brock in a Torana with a red 202.
If it is old or rare - Cut it! http://www.ehlimo.com.au/
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