 Cylinder heads for 1.8, replace, fix, or upgrade? |
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| Hine62 |
 Sep 11 2013, 02:36 PM
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#1
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Member  Group: Members Posts: 132 Joined: 4-October 12 From: Binghamton, NY Member No.: 15,000 Region Association: None  |
When we tuned up the valve gaps I noticed that one of my exhaust ports studs was fixed using a heli-coil. Of course that coil needed to be replace because it pulled out, then when tightening the other side of the same port I noticed the hole the stud was in was cracked, and of course it broke. I tired JB weld but that didn't work.
So my question is... can this problem be fixed, or should the heads be replaced (new or used?), or is there an upgraded head? I'm assuming the engine will need to be pulled out to take the heads off. |
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| Cap'n Krusty |
Sep 11 2013, 05:43 PM
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#2
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
One: Why would you ever think JB Weld would fix that? Is their advertising THAT good?
Two: A timesert fits in the same thapped hole as a Helicoil. It's NOT bigger than a Helicoil. If the boss is cracked, it's cracked, and no insert is gonna fix that. The heads will have to be welded properly, and the odds are the cracks are a LOT more numerous and extensive than you think. Three: Yes, the engine has to come out to remove the heads. A bit of advice. If you're going to have the heads welded, use a specialist shop with a LOT of T4 head experience. You could be looking at 1500-2K with parts. The Cap'n |
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| Hine62 |
Sep 11 2013, 07:37 PM
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#3
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Member Group: Members Posts: 132 Joined: 4-October 12 From: Binghamton, NY Member No.: 15,000 Region Association: None |
QUOTE(Cap'n Krusty @ Sep 11 2013, 03:43 PM)  One: Why would you ever think JB Weld would fix that? Is their advertising THAT good? Two: A timesert fits in the same thapped hole as a Helicoil. It's NOT bigger than a Helicoil. If the boss is cracked, it's cracked, and no insert is gonna fix that. The heads will have to be welded properly, and the odds are the cracks are a LOT more numerous and extensive than you think. Three: Yes, the engine has to come out to remove the heads. A bit of advice. If you're going to have the heads welded, use a specialist shop with a LOT of T4 head experience. You could be looking at 1500-2K with parts. The Cap'n Actually I was thinking of replacing the heads with used or new. From what I've seen a set of used heads goes for around $300 and new ones around $800. Pulling the engine out and putting heads on is not a problem. My father worked on these engines back when they were still making them. Any other places to pick up new heads besides aapistons and autoatlanta? P.S. I know JB weld was a crazy idea, but I was hoping to keep driving until I put the car in storage for the winter. |
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Posts in this topic
Hine62 Cylinder heads for 1.8 Sep 11 2013, 02:36 PM
Mblizzard Have you looked at the Time-sert thread repair pro... Sep 11 2013, 03:21 PM Mblizzard Sorry Cap'n I thought the OD of the Time-sert ... Sep 11 2013, 06:36 PM stugray I have a set of 1.8L heads in decent condition.
If... Sep 12 2013, 10:55 AM malcolm2 When I had HAM redo my heads, he would only take o... Sep 12 2013, 01:37 PM
Cap'n Krusty
When I had HAM redo my heads, he would only take ... Sep 12 2013, 01:42 PM r_towle Www.aircooled.net has them.
400 bucks each..cheap... Sep 12 2013, 08:52 PM Bob L.
Www.aircooled.net has them.
400 bucks each..chea... Sep 13 2013, 12:46 PM ThePaintedMan
Not sure which ones you are looking at but the p... Sep 13 2013, 01:00 PM Dave_Darling Note that the new AMC heads from Spain have decent... Sep 13 2013, 09:37 AM r_towle
Note that the new AMC heads from Spain have decen... Sep 13 2013, 10:46 AM Dave_Darling
Have there been documented cases of failures of t... Sep 13 2013, 04:02 PM r_towle
Have there been documented cases of failures of ... Sep 13 2013, 04:21 PM Jake Raby
Note that the new AMC heads from Spain have dece... Sep 13 2013, 07:59 PM ldsgeek Not sure if the hardware is that bad, but I think ... Sep 13 2013, 12:16 PM r_towle
Not sure if the hardware is that bad, but I think... Sep 13 2013, 03:30 PM HAM Inc
Countless documented cases. Have one in the shop ... Sep 13 2013, 06:20 PM Hine62 I'm glad I started this topic... great info. I... Sep 13 2013, 09:59 PM pilothyer
I'm glad I started this topic... great info. ... Sep 13 2013, 11:45 PM Bob L.
I'm glad I started this topic... great info. ... Sep 14 2013, 09:34 PM HAM Inc 1.8 AMC heads have not been available for several ... Sep 14 2013, 08:05 AM stugray took me a couple days to dig them out & clean ... Sep 14 2013, 09:19 PM Hine62
took me a couple days to dig them out & clean... Sep 14 2013, 11:48 PM stugray So I did a quick check on shipping.
If I put both ... Sep 15 2013, 11:04 AM Mblizzard
So I did a quick check on shipping.
If I put both... Sep 15 2013, 01:27 PM Hine62
So I did a quick check on shipping.
If I put both... Sep 16 2013, 02:11 PM Kirmizi Greyhound freight? :confused:
That's how th... Sep 15 2013, 11:31 AM stugray
Post office? UPS office? Sep 15 2013, 02:46 PM Mblizzard Post office. Sep 15 2013, 04:06 PM stugray
On the USPS website I only see flat rate boxes u... Sep 15 2013, 05:15 PM Mblizzard It was very tight. I added a couple of layers of ... Sep 15 2013, 06:05 PM stugray Sorry I have been a little distracted by the flood... Sep 16 2013, 04:40 PM Hine62
Sorry I have been a little distracted by the floo... Sep 16 2013, 05:45 PM |
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