pulled the heads, looks like a bbq pit . . . |
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pulled the heads, looks like a bbq pit . . . |
mcbain77 |
Mar 4 2006, 10:56 AM
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#1
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
So i pulled the cylinder heads off a 1970 1.7L engine and they look really pretty . . . (IMG:http://www.914world.com/bbs2/html/emoticons/icon8.gif)
This is my first Type IV to dismantle so does anyone have any suggestions? How does it look? I also took off the oil filler assembly and found 1/2" of rusted out gunk on the area below the breather assembly. How do i clean this out? Should I crack the case and just start from the beginning? Attached image(s) |
mcbain77 |
Mar 4 2006, 10:57 AM
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#2
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
Area below the breather . . .
Attached image(s) |
Allan |
Mar 4 2006, 10:57 AM
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#3
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
Doesn't look so bad.
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mcbain77 |
Mar 4 2006, 10:59 AM
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#4
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
The top of the pistons look just about as good. Any suggestions on removing the carbon?
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r_towle |
Mar 4 2006, 11:52 AM
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#5
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Easy off oven cleaner...works awesome.
Rich |
anthony |
Mar 4 2006, 11:54 AM
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#6
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2270 club Group: Benefactors Posts: 3,107 Joined: 1-February 03 From: SF Bay Area, CA Member No.: 218 |
Why did you take the heads off?
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mcbain77 |
Mar 4 2006, 01:13 PM
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#7
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
Fake answer = the rocker assembly has some nasty corrosion and there was crap all over the inside of the head. I also pressure washed the engine and wanted to make sure i got the thing dry.
Real answer = DWD (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) |
mcbain77 |
Mar 4 2006, 01:16 PM
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#8
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
What about the gunk in the area below the breather assembly? The oil filler corroded and there is a significant amount of deposit. I am betting there are deposits all throughout the crankcase because of this. Can this be flushed out?
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mcbain77 |
Mar 4 2006, 01:29 PM
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#9
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
Also . . . . broken fin
so new cylinder is needed right? Attached image(s) |
Andyrew |
Mar 4 2006, 01:37 PM
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#10
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California |
If the fin was a regular one.. I would say you could us it..
but that fin is needed to hold the cylander... Thats a toughie!! Its only a 1.7, so you should be able to find a new cylander cheap.. |
Allan |
Mar 4 2006, 01:39 PM
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#11
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
You can run it with that fin broken. The head actually cinches the barrel down and doesn't come in contact with it.
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mcbain77 |
Mar 4 2006, 01:40 PM
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#12
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
Only a 1.7??????? I'll have you know that thing can crank out a mean 80HP at the wheels on a good day when the stars are aligned!
(IMG:http://www.914world.com/bbs2/html/emoticons/poke.gif) |
fiid |
Mar 4 2006, 01:40 PM
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#13
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Turbo Megasquirted Subaru Member Group: Members Posts: 2,827 Joined: 7-April 03 From: San Francisco, CA Member No.: 530 Region Association: Northern California |
I had a fin like that on my 1.7 and was told to leave it - it's only a small peice missing the heat dissipation won't change much.
I think (contrary to what Andyrew said) that the fin isn't actually the mating surface so I think you'll be okay. IIRC my 1.7 had exactly the same thing. |
mcbain77 |
Mar 4 2006, 01:49 PM
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#14
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
I'll probably leave it then. If the engine blows then it is only a 1.7 anyway. (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)
As for the gunk below the oil breather, has anyone seen any corrosion like this? It is just sediment so I can clean it out the top. However, I was thinking that stuff like that floating around in the case is a recipe for disater. Even more so than a broken fin. Can you flush a case? Maybe with consecutive oil changes after short running periods? Hmmm. (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) |
Allan |
Mar 4 2006, 01:53 PM
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#15
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
That's what I would do. |
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Joe Ricard |
Mar 4 2006, 04:06 PM
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#16
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
My resolution isn't very good on this computer. Is that piston Domed or dished.
Domed is 80 HP early "W" case Dished I don't think it makes enough power to pull it's self out of a wet paper bag. ON A GOOD DAY. |
mcbain77 |
Mar 4 2006, 06:29 PM
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#17
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Member Group: Members Posts: 155 Joined: 27-January 06 From: Houston, TX Member No.: 5,485 |
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Bleyseng |
Mar 4 2006, 07:10 PM
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#18
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
dished so you are in busland a whooping 67hp.....change them out to a set of domed 90mm's.
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Allan |
Mar 4 2006, 07:11 PM
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#19
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/givemebeer.gif) |
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McMark |
Mar 4 2006, 07:46 PM
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#20
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
The fins are only for cooling. The cylinder mates of the head at the cylinder wall only. In fact, if your fins are hitting the head, it can cause sealing problems. |
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