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Author Topic: AFR 185 72 cc heads 2.05 intake valve.  (Read 1707 times)
Mgabski
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« on: April 29, 2018, 01:50:11 pm »

Hey I have a set of these heads. Older non renegade heads. When I blew up my motor it took out two cylinders which in return damaged one cylinder head. I had gotten one quote on fixing them and it was in the 800 to 1000$ ballpark. The shop that was going to be doing the repairs actually advised against using them on a 302 based motor. I am trying to figure out if I should get them repaired or cut my losses. I spoke with another machine shop who I was enquiring about doing the bottom end and they had told me if I were to go with the 4.125 bore the heads would be a perfect set up. I am going back and forth because a new set of decent heads are looking to be minimum 1500 or so. Iíve been on the look out to see if a set of my heads come up used but it seems they are uncommon.

Any input would be greatly appreciated.
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Mgabski
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« Reply #1 on: April 29, 2018, 01:51:50 pm »

Also hope itís okay that I posted this here. I see that this is labeled as stock heads category , but I see a few other posts referencing aftermarket heads.
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juiced coupe
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« Reply #2 on: April 29, 2018, 04:09:20 pm »

Sounds like you need to find another shop to deal with.

Those heads are about perfect for a 302, and on the smaller side for a 302 based stroker.

In nearly any case, the larger bore is preferred. In addition to additional displacement, the larger bore helps unshroud the valves.
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Doing more with less, or something like that.
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Mgabski
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« Reply #3 on: April 29, 2018, 05:07:43 pm »

Itís unfortunate because they are one of the more well known shops. People from all over the country send their stuff to them. I was thinking of still getting heads repaired by them since they are known for their great work. He had a full long block for sale at the time I enquired, not sure if that had something to do with his opinion on my heads haha

So as long as they get a clean bill of health from them for the 800 to 1000 they originally quoted me, Iíd be in good shape with those heads?  Iím going back and forth between a dart block or building a stock block.  I know the wiser thing is to do the dart block. But that is several years away. If doing a ford block Iíd go with the 347, dart Iíd opp for the bigger bore and go 363.
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knucklefux
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« Reply #4 on: April 29, 2018, 10:10:46 pm »

before i spent $1k to repair that head, i'd put another $500 with it and get something new.

a pair of high ports is like $1600.

or find a used set of vic jrs or TW or something.  spending that much money to repair that head is just not a good plan IMO.
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Mgabski
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« Reply #5 on: April 30, 2018, 09:16:16 am »

Thatís kinda where I was thinking. I donít know if I wanna do used heads just afraid Iíll get something that ends up needing more work and putting me at the price of new heads. Itís a tough call. Wish they still made the head so I could just buy a bare casting and then swap everything over thatís in good shape.
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CDW6212R
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« Reply #6 on: April 30, 2018, 09:30:17 am »

I'd hold onto those heads and see if another use one or pair turn up later cheap. That $800+ price makes repair too much, move to a better head.
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Don

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Mgabski
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« Reply #7 on: April 30, 2018, 10:48:05 am »

Yeah I check almost daily for used ones haha. Most I see are 58 cc or the 2.02 valve or both. But all I need is one so maybe one day. I think if I were to buy new heads Iíd go with something like the 11r from trickflow. From what i see it is a bad ass head. 
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Outlaw Bill
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« Reply #8 on: April 30, 2018, 10:30:32 pm »

Not worth fixing, plus never seen 185's with 2.05 intake valves.
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289nate
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« Reply #9 on: May 08, 2018, 01:52:24 am »

You either have a set of early 205 or 225 AFR heads with a 2.05 valve, or you have a set of early AFR 185 heads with a 2.02 intake valve.  Or... the 185 heads were ported and set up with a larger intake valve.

A set of 205-225 AFR heads with the 2.05" intake valve could be considered too big for a mildly warmed up 302.  The larger 2.05" intake valve could be considered too large for the stock valve spacing AFR head in a small bore (4"-4.060") rather than a large 4.125" bore.

I'm suspicious you may not have a set of 185 heads.
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\'65 fastback pump gas 289, 4.56 gears, and faceplated T5.  11.123 at 122.4
289nate
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« Reply #10 on: May 08, 2018, 01:55:18 am »

Plus, the 72cc combustion chamber is going to put the compression in the toilet unless you're running boost or have a dome piston with a 302.  Could you be confusing the size of the combustion chamber being too big rather than the intake port being too big?
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\'65 fastback pump gas 289, 4.56 gears, and faceplated T5.  11.123 at 122.4
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