The 151 is worthy I think?

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Re: The 151 is worthy I think?

Postby res0o7eb » Fri Apr 08, 2011 2:49 am

Jeff,

That is an interesting set-up. Cool to see the actual parts on the engine and compare it to the drawings from the service manual.
Yes, definitely some heavy-duty brackets. I am interested in the fan, shroud, and radiator, too.
I'll look in the For Sale section and send you another PM.
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Re: The 151 is worthy I think?

Postby res0o7eb » Fri Apr 08, 2011 3:11 am

I think I found confirmation on using Small Block Chevy rods with the the 151 crankshaft.
There was a concern about the big end of the 151 rod being thicker than a SBC V-8 rod.
Apparently, that doesn't matter. What does matter is the width of the rod bearing.
Hmmm.... maybe not - I'll have to think about this as rod side clearance needs to be factored in.
Anyway, the 36-page document details the build-up of the Pontiac Super Duty 2.5 kit (see text at bottom of image):
151RodBearingWithSBCRodView.jpg
151RodBearingWithSBCRodView.jpg (61.29 KiB) Viewed 958 times

The document also specifies the rod bearing as Clevite Part Number CB1285P which is still available.
http://www.summitracing.com/parts/CLE-C ... 2.5L%2f151
http://www.northernautoparts.com/Produc ... yId=183134

Image
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Re: The 151 is worthy I think?

Postby HI WINDING MONZA » Fri Apr 08, 2011 8:56 pm

res0o7eb wrote:I think I found confirmation on using Small Block Chevy rods with the the 151 crankshaft.
There was a concern about the big end of the 151 rod being thicker than a SBC V-8 rod.
Apparently, that doesn't matter. What does matter is the width of the rod bearing.
Hmmm.... maybe not - I'll have to think about this as rod side clearance needs to be factored in.
Anyway, the 36-page document details the build-up of the Pontiac Super Duty 2.5 kit (see text at bottom of image):
151RodBearingWithSBCRodView.jpg

The document also specifies the rod bearing as Clevite Part Number CB1285P which is still available.
http://www.summitracing.com/parts/CLE-C ... 2.5L%2f151
http://www.northernautoparts.com/Produc ... yId=183134

Image



As I may recall Tom, they have to be SBC 6" rods and a certain journel size......... :?: :?: :?:

Doug in Az 8)
My Old Cadillac Powered Monza Still Lives...........now on its 5th owner!..........Somewhere ?

The 90's just keep rollin' along........
1990 Chevrolet Silverado Regular Cab Long Bed 350 TBI V8 700R4 109k miles
1992 Pontiac Sunbird Coupe 2.0 OHC MPFI I4 TH125C 149k miles
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Re: The 151 is worthy I think?

Postby HI WINDING MONZA » Tue Apr 12, 2011 3:22 pm

Good reading on SBC rods in 151-153-181 engines about half way thru................................

http://www.inliners.org/ubbthreads/ubbt ... 01c5be23fa

Doug in AZ 8)
My Old Cadillac Powered Monza Still Lives...........now on its 5th owner!..........Somewhere ?

The 90's just keep rollin' along........
1990 Chevrolet Silverado Regular Cab Long Bed 350 TBI V8 700R4 109k miles
1992 Pontiac Sunbird Coupe 2.0 OHC MPFI I4 TH125C 149k miles
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Re: The 151 is worthy I think?

Postby res0o7eb » Wed Apr 13, 2011 2:46 am

Thanks for the link Doug. Yeah, keep the reciprocating stuff as light-weight as possible. Good advice.
Interesting that some are doing the same thing as here except with a 153 c.i. Chevy. Not sure what they mean about the sawzall. :D

Thought I had mentioned it already, but I couldn't find it in this thread.
Aftermarket 6.0" forged rods for the Chevy 194 c.i., 230 c.i., 250 c.i. L-6 are available that have the correct width.
http://www.summitracing.com/parts/SCA-66000206SGL/
Only $71 each, $284 for 4 - not bad. If you buy 6 for $435, they are weight-matched.

Problem is that they have a 2.0" journal diameter.
So, the 2.1" journal diameter of the 181 crankshaft needs to be turned down.I haven't priced that, yet.

I also bought a set of 181 Mercruiser 5.7" rods just for mockup on the crankshaft and a comparison to some SBC rods that I have.
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Re: The 151 is worthy I think?

Postby larry johnson » Tue May 21, 2013 12:30 pm

how much were the headers ? I have new black ones to sell.
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Re: The 151 is worthy I think?

Postby T-FATTY » Tue May 21, 2013 4:35 pm

Just write a check and be done with it!
http://cgi.ebay.com/ebaymotors/Pontiac- ... 33&vxp=mtr
YES I accept paypal donations...
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Re: The 151 is worthy I think?

Postby HI WINDING MONZA » Tue May 21, 2013 7:53 pm

T-FATTY wrote:Just write a check and be done with it!
http://cgi.ebay.com/ebaymotors/Pontiac- ... 33&vxp=mtr


Nice Find , but I question the crappy Orange Fram Filter on it. Thats the bottom of the barrel for filters on a $3000 + motor? :bang:

Doug in PR 8)
My Old Cadillac Powered Monza Still Lives...........now on its 5th owner!..........Somewhere ?

The 90's just keep rollin' along........
1990 Chevrolet Silverado Regular Cab Long Bed 350 TBI V8 700R4 109k miles
1992 Pontiac Sunbird Coupe 2.0 OHC MPFI I4 TH125C 149k miles
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