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rustfree1967bug
Samba Member
Joined: November 16, 2006
Posts: 3446
Location: minnesota
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 Posted: Tue Mar 03, 2015 11:27 am Post subject: Replace pistons and cylinders while i am in here? |
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I have a '67 so42 with a factory exchange/rebuild 1500sp. I tore it down and sent the heads to brothers machine and had them do a full rebuild. I am wondering if before i go ahead and put it back together if i should just go ahead and buy new pistons and cylinders? When i pulled the 3&4 cylinder side head on of the cylinders had a bit of oil in it. Stuck rings maybe? This bus had sat for over 20 years without being ran when i got it. Bus has 89k original miles so the engine has less than that seeing as it was replaced at some point in its life with a new one. I am not splitting the case.
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'70 ghia
'69 ghia
'65 singlecab
'66 sunroof beetle
'74 bus
'67 so-42
IDA's...well... they talk dirty -MURZI |
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Stuart Maingot
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Joined: December 13, 2009
Posts: 240
Location: Trinidad West Indies
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| Posted: Tue Mar 03, 2015 12:13 pm Post subject: |
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| may be a good idea and you could upgrade to 1600 cc easily. |
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Braukuche
Samba Member
Joined: September 03, 2004
Posts: 11236
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| Posted: Tue Mar 03, 2015 12:50 pm Post subject: |
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| Stuart Maingot wrote: |
| may be a good idea and you could upgrade to 1600 cc easily. |
Agreed, 1600 Ps and Cs are cheap, so why not?
_________________
Go Reds! Smash state!
Retirement is here!
1960 double cab
1960 Baja Bug
1963 stretched double cab
1962 Golde sunroof Ghia
1963 356 B coupe
1963 Notchback
1967 21 window less rusty now
1989 Westfalia |
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andk5591
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Joined: August 29, 2005
Posts: 16823
Location: State College, PA
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| Posted: Tue Mar 03, 2015 2:46 pm Post subject: |
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I have done that on several of mine where the bottom end seemed fine, so I just did fresh heads and new P/Cs. This way you know what you have when you button it all back up.
_________________
D-Dubya Manx clone 1914. Ex wifes car.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Ex-wifes car.
66 bug project - Real patina & Suby conversion
There's more, but not keeping them... |
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crofty
Judas of the North
Joined: August 09, 2000
Posts: 19920
Location: Land of Whine and Phonies
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| Posted: Tue Mar 03, 2015 3:00 pm Post subject: |
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I'd change my rod bearings too.
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Your Vanagon sucks, Stop waving at me.
| HamburgerBrad wrote: |
I slept on crofty's tent once. I passed out drunk from two bottles of Everett's brother's wine. |
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rustfree1967bug
Samba Member
Joined: November 16, 2006
Posts: 3446
Location: minnesota
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| Posted: Tue Mar 03, 2015 3:16 pm Post subject: |
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I wont be splitting the case though so won't be able to replace bearings.
_________________
'70 ghia
'69 ghia
'65 singlecab
'66 sunroof beetle
'74 bus
'67 so-42
IDA's...well... they talk dirty -MURZI |
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crofty
Judas of the North
Joined: August 09, 2000
Posts: 19920
Location: Land of Whine and Phonies
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| Posted: Tue Mar 03, 2015 3:33 pm Post subject: |
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Rod bearing not main bearings. New p/c will have better compression and therefore more downward thrust an already worn bearings.
_________________
Your Vanagon sucks, Stop waving at me.
| HamburgerBrad wrote: |
I slept on crofty's tent once. I passed out drunk from two bottles of Everett's brother's wine. |
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rustfree1967bug
Samba Member
Joined: November 16, 2006
Posts: 3446
Location: minnesota
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| Posted: Tue Mar 03, 2015 3:42 pm Post subject: |
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So i can replace rod bearings without opening the case up? What brand of p/c's are best for the money?
_________________
'70 ghia
'69 ghia
'65 singlecab
'66 sunroof beetle
'74 bus
'67 so-42
IDA's...well... they talk dirty -MURZI |
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crofty
Judas of the North
Joined: August 09, 2000
Posts: 19920
Location: Land of Whine and Phonies
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| Posted: Tue Mar 03, 2015 3:48 pm Post subject: |
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| rustfree1967bug wrote: |
| So i can replace rod bearings without opening the case up? What brand of p/c's are best for the money? |
Yep . Just replace them with the same size that are in there.
_________________
Your Vanagon sucks, Stop waving at me.
| HamburgerBrad wrote: |
I slept on crofty's tent once. I passed out drunk from two bottles of Everett's brother's wine. |
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BarryL 
Samba Member
Joined: November 01, 2004
Posts: 15490
Location: Casa de Oro, California
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| Posted: Tue Mar 03, 2015 6:59 pm Post subject: |
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| Do the cylinders have a ridge above the top of the position of the top rings? |
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andk5591
Samba Member
Joined: August 29, 2005
Posts: 16823
Location: State College, PA
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| Posted: Wed Mar 04, 2015 4:42 am Post subject: |
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I started using AA and have been very happy. If you do some digging you will find that many of the "go to" brands in the past have changed.
_________________
D-Dubya Manx clone 1914. Ex wifes car.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Ex-wifes car.
66 bug project - Real patina & Suby conversion
There's more, but not keeping them... |
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RPGreg2600
Samba Member
Joined: November 07, 2010
Posts: 1657
Location: Vallejo, CA
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| Posted: Wed Mar 04, 2015 7:45 am Post subject: |
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| While you have the Pistons off, shine a light in the case and make sure your lifters don't look pitted. They often are. Also mage sure your front main bearing isn't loose in the case. |
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Clara
Samba Member
Joined: June 14, 2003
Posts: 12666
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| Posted: Wed Mar 04, 2015 8:35 am Post subject: |
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| Braukuche wrote: |
| Stuart Maingot wrote: |
| may be a good idea and you could upgrade to 1600 cc easily. |
Agreed, 1600 Ps and Cs are cheap, so why not? |
Is a set about $250 these days? ah $322 from cip1
Do the old ones still have hatch marks? Do they have a ridge at the top of the piston ring sweep? Metal ridge, not carbon ridge. Do the put a new ring in and measure test. It's in every Bentley and the Idiot book. If you don't have a new ring, use the old top ring.
Yes, replace rod bearings with same size as old. Is there pitting on the face of the bearing shells? worn through to coppery colored? These are signs of wear.
I have just replaced rings and rod bearings if the wear on the ps & cs was light, and the wear on the lower end was minimal. It is a skill to figure out what parts are worn and what is okay to re-use.
What is the end-play?
I think it's odd to say a car has 89K original miles. I hear that sometimes and wonder if the miles were installed at the factory. Is the bus is M-coded for them? like for original safari windows?
Are they German miles? rather than those aftermarket lesser quality miles made in Mexico or the USA?
Maybe only 80K are original, and the other 9K are previous owner installed? How can you tell the difference?
I figure you mean the car has 89 K documented actual miles, and I know people use 'original miles' that way, but it just seems funny.
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andk5591
Samba Member
Joined: August 29, 2005
Posts: 16823
Location: State College, PA
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| Posted: Wed Mar 04, 2015 1:55 pm Post subject: |
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AAs are $150 and basic Mahles are $199 from CIP1. Not sure what the opinion is of Mahle these days.
_________________
D-Dubya Manx clone 1914. Ex wifes car.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Ex-wifes car.
66 bug project - Real patina & Suby conversion
There's more, but not keeping them... |
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Clara
Samba Member
Joined: June 14, 2003
Posts: 12666
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crofty
Judas of the North
Joined: August 09, 2000
Posts: 19920
Location: Land of Whine and Phonies
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| Posted: Wed Mar 04, 2015 2:35 pm Post subject: |
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Cheap insurance.
_________________
Your Vanagon sucks, Stop waving at me.
| HamburgerBrad wrote: |
I slept on crofty's tent once. I passed out drunk from two bottles of Everett's brother's wine. |
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andk5591
Samba Member
Joined: August 29, 2005
Posts: 16823
Location: State College, PA
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| Posted: Wed Mar 04, 2015 5:58 pm Post subject: |
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I dunno - have used Mahles years ago and then started reading on here that they arent as good as they used to be. First set of AAs I got were for my 1200 big bore. I drive the hell out of the car and they seem to be holding up fine. I have not torn the engine down to inspect for wear, but having no apparent problems. And other reviews that I have read on them have been good but I believe that they had issues quite a few years ago. Buy what you are comfortable with, but I have no concerns myself on AAs.
_________________
D-Dubya Manx clone 1914. Ex wifes car.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Ex-wifes car.
66 bug project - Real patina & Suby conversion
There's more, but not keeping them... |
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rustfree1967bug
Samba Member
Joined: November 16, 2006
Posts: 3446
Location: minnesota
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| Posted: Wed Mar 04, 2015 7:38 pm Post subject: |
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I have not pulled the cylinders off yet. I see aircooled.net has these http://vwparts.aircooled.net/Economy-Piston-Cylinder-Set-85-5mm-x-69mm-Cast-p/vw8550t1.htm anyone used those? This bus will see maybe 2500 miles per year at the most. So if i can get another 25k reliable miles out of this engine i would be plenty happy. Also am thinking i should throw a new oil pump in.
_________________
'70 ghia
'69 ghia
'65 singlecab
'66 sunroof beetle
'74 bus
'67 so-42
IDA's...well... they talk dirty -MURZI |
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Clara
Samba Member
Joined: June 14, 2003
Posts: 12666
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| Posted: Wed Mar 04, 2015 8:05 pm Post subject: |
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| crofty wrote: |
Cheap insurance. |
To be on the safe side, it should have a complete rebuild.
It is a slippery slope opening up a motor.
_________________
The Obsolete Air-Cooled Documentation Project http://oacdp.org/ |
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joe cool
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Joined: August 20, 2006
Posts: 1262
Location: Yolo County CA
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| Posted: Wed Mar 04, 2015 9:04 pm Post subject: |
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My opinion is it is better to spend your $ rebuilding a different motor or building a new motor while leaving your current one alone and doing its job powering the bus. When the new one is complete and ready... make the swap.
If you remove the motor from the bus and don't put it or another one in pronto you have just moved your bus from "driver" to "project" status and it is a slow spiraling downhill slope from there. Just opinion.
By the way Clara, they are actually called a "bus". |
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