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Bought a 202 - advice?

jakbob

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Last year I bought an efi 202, the plan being to build a hot 6 for my vk project. Long story short I stripped the engine down and honed the bores only to find that one of them is cracked. So the other day I picked up another one, its a blue block thats been painted black. I put it on my engine stand and flipped it over and pulled the sump off, and managed to measure the bores, seems to be 60 thou overbore. Now I was hoping for standard bores. The blue 202 in my vc daily driver is unmolested and standard, I know this for a fact. So I'm wondering whether maybe I should swap the motor I just bought into the vc and rebuild the one thats in it. Anyone have any thoughts or advice?
Cheers
 

vkberlina

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Last year I bought an efi 202, the plan being to build a hot 6 for my vk project. Long story short I stripped the engine down and honed the bores only to find that one of them is cracked. So the other day I picked up another one, its a blue block thats been painted black. I put it on my engine stand and flipped it over and pulled the sump off, and managed to measure the bores, seems to be 60 thou overbore. Now I was hoping for standard bores. The blue 202 in my vc daily driver is unmolested and standard, I know this for a fact. So I'm wondering whether maybe I should swap the motor I just bought into the vc and rebuild the one thats in it. Anyone have any thoughts or advice?
Cheers
I wouldnt spend huge money on the 202.

You really should buy an EFI 202 block but good luck, there is a ported vacume switch that fits intot he DS of the block behind the dizzy, other blocks you will need to drill this out.
Black Carbie 202 heads have ports for the EGR system which would need to be plugged.
12port Blue motor heads will fit hower have an inferior port flow design.

If your interested I have a carbie black motor block, pistons & rods somewhere bored 40thou, from memory bore just needs a hone.

40 thou is a good size, bore wall isnt too thin and slight performance gain over std. You could always get the 60thou block sleeved.

Also quick & easy way to tell size of bore on the top of the pistons you will see STD, 020, 040, 060 or 1, 1.5 etc the 020 etc numbers are imperial the 1.5 etc are metric

cheers
Scott
 

jakbob

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I wouldnt spend huge money on the 202.

You really should buy an EFI 202 block but good luck, there is a ported vacume switch that fits intot he DS of the block behind the dizzy, other blocks you will need to drill this out.
Black Carbie 202 heads have ports for the EGR system which would need to be plugged.
12port Blue motor heads will fit hower have an inferior port flow design.

If your interested I have a carbie black motor block, pistons & rods somewhere bored 40thou, from memory bore just needs a hone.

40 thou is a good size, bore wall isnt too thin and slight performance gain over std. You could always get the 60thou block sleeved.

Also quick & easy way to tell size of bore on the top of the pistons you will see STD, 020, 040, 060 or 1, 1.5 etc the 020 etc numbers are imperial the 1.5 etc are metric

cheers
Scott
I'm not planning on running the standard head - I have the efi one which should be fine still, and a blue one i bought at a swap meet that has been worked - not sure which one i'll use but i'll get the bottom end sorted out first.
I don't know anything about that vacuum switch but people are always talking about efi conversions, so it can't be too difficult? I'm also planning on a delco 808 conversion.
I'm thinking maybe the 60 thou over bore should be fine, so long as it doesn't need to go anyfurther.
Where do you live? I wouldn't mind another block, I don't really know where I'd put it but I could work something out. I'm in brisbane
Cheers,
Jakbob
 

vkberlina

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Honestly I have had 60thou blocks I think I might have one kicking around as well with pistons they run hotter and in my experience tend to fail more quickly.

cheers
Scott
 

jakbob

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Honestly I have had 60thou blocks I think I might have one kicking around as well with pistons they run hotter and in my experience tend to fail more quickly.

cheers
Scott
I hate to think how an 80 thou block would be then. Does 60thou take it out to 208 or is that 80 thou?
 

kmaybz

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either get a new car ,or if you can find a 179HP ,bore To fit 302 pistons.
Only 6 block u can do this to
 

tigervh

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either get a new car ,or if you can find a 179HP ,bore To fit 302 pistons.
Only 6 block u can do this to
WTF is that supposed to mean?
 

jakbob

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either get a new car ,or if you can find a 179HP ,bore To fit 302 pistons.
Only 6 block u can do this to
What the hell are you talking about? Whats the car got to do with it? I'm talking about rebuilding a motor here. And what advantage would there be in running a 179 block with 302 pistons? Technically it would be illegal to run a 179 in a commodore anyway because its too old. Pre emissions and stuff.
 

havick vk

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the very first motor u were gonna build with the cracked bore...still can u this block and just sleeve that bore
 

jakbob

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the very first motor u were gonna build with the cracked bore...still can u this block and just sleeve that bore
Was going to do that but it would cost $180 just to sleeve the one bore, and if the block is cracked who knows what else might have gone wrong with it? And it cost me $180 for the new motor plus shift kitted auto and all the bolt on parts so in that respect i got a better deal.
I think I'll stick to the 60thou block, by the time I finish it and get the car finished I'll be off my P's so it doesn't have to last to long, just long enough for me to get an ls2 into my VC :yeah:
 
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