Blue 202 parts into 186.
#1 _GTR071_
Posted 14 January 2007 - 03:39 PM
Now, that plan is to use the 202 crank and rods in the 186 block, because apparently the cranks are better balanced then the red cranks, and well, starfire rods; how can i refuse
Not sure what pistons i'll be using at the moment whether from the blue or red motor. Be using my yella terra head, ill be getting some straight cut timing gears, bit of a cam. In the department of manifolds, ill be using my 2 barrel redline manifold with a holley 350, which i can always later change for the WW2 strommy later on, and also its got extractors. Later on i'll be putting YT rollers on the top. Thats the plans for the moment. Tell us what you guys think. Cheers.
#2 _Bomber Watson_
Posted 14 January 2007 - 04:36 PM
#3
Posted 14 January 2007 - 07:47 PM
#4 _Bomber Watson_
Posted 14 January 2007 - 08:18 PM
that said, there is method to the madness of turning down a 202 blue motor crank journals to fit in a 186 block. less bearing surface area= more hp, not a lot but a little. also you have more meat in the block and mains caps. that with the longer stroke and better balanced crank makes for a good race bottom end. i've seen a bloke at the drags do many a 10 second pass form a bottom end with that combination.
#5 _GTR071_
Posted 17 January 2007 - 05:26 PM
#6
Posted 22 January 2007 - 07:47 PM
#7 _Bomber Watson_
Posted 22 January 2007 - 08:48 PM
186 and 202 have the same bore, just diferent stroke. get the mains journals on the 202 crank ground down so they fit into a 186 block, take her out .060 and you will have your 208.
that or stick it all in a 202 block and take her out .060.
that said, i only reccomend going out as far as you have to. ie if the motor is currently +.020 then go out to +.030. really, going out 60 thou from standard to a 208 will make bugger all diference. better off keeping your block good for a few more rebuilds. were seriously talking around one hp gain every 10 thou, its not worth buggering up a good block by taking it right out strait up.
that or you could look at getting the 202 crank offset ground a few thou... get to keep your good block but still have your madgic extra couple of cubes.
Edited by Bomber Watson, 22 January 2007 - 08:49 PM.
#8
Posted 22 January 2007 - 08:58 PM
So no I don't think you can do a 234 for that...cheapest a N/A 234 would be about $2000
#9 _Bomber Watson_
Posted 22 January 2007 - 09:02 PM
your motor sounds like fun fastehholden.
#10
Posted 22 January 2007 - 09:14 PM
I was responding to MrLC.i would like to do the same thing i have all the blue motor parts and a 186, but i want to end up with a 208 motor wud it work out cheaper to just buy the prostroke kit or have the work done to the crank and buy the pistons and other parts.i think the prostroke kit is about $1200.
I'm sure it would be fun..if I got it going. It was built to win Horsepower Heros back in 1996..the 6 cyl turbo class was only 137 HP then.
#11 _Bomber Watson_
Posted 22 January 2007 - 10:04 PM
thats why im confusedi would like to do the same thing i have all the blue motor parts and a 186, but i want to end up with a 208 motor wud it work out cheaper to just buy the prostroke kit or have the work done to the crank and buy the pistons and other parts.i think the prostroke kit is about $1200.
#12
Posted 23 January 2007 - 05:24 PM
#13 _Bomber Watson_
Posted 23 January 2007 - 06:59 PM
#14
Posted 23 January 2007 - 08:28 PM
#15
Posted 24 January 2007 - 08:00 AM
MRLC..that would depend on how high.
#16
Posted 24 January 2007 - 09:07 AM
#17
Posted 24 January 2007 - 10:02 AM
#18
Posted 25 January 2007 - 12:06 PM
#19 _Drag lc_
Posted 25 January 2007 - 07:28 PM
Thanks Hayden
#20
Posted 26 January 2007 - 04:24 PM
#21 _Bomber Watson_
Posted 26 January 2007 - 08:23 PM
heres a pick i took a while ago to show someone else, couldent find a open chamber head laying around (got one somewhere) so i scribbled in a line to show you how it looks...
the bit i drew in with red is where the open chamber heads open up to...if you get the drift now.
#22 _Drag lc_
Posted 27 January 2007 - 08:47 AM
Thanks Hayden
#23
Posted 27 January 2007 - 09:56 AM
#24 _Drag lc_
Posted 27 January 2007 - 04:56 PM
#25
Posted 27 January 2007 - 08:48 PM
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