| Author |
Message |
Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
|
 Posted: Sun Feb 07, 2021 11:21 am Post subject: Mystery Liners |
 |
|
Gentlemen,
Found these 94 dished Bus P&L when cleaning in the hoard..
(No that silver paint isn't my work) 
Anybody recognize these things?
There's an 'S' cast in where the part number would go on a factory cylinder.
Pistons have the cast-in expansion plates, but no markings.
Maybe AA?
Who can solve the mystery?
_________________
Bus Motor Build
What’s That Noise?!? |
|
| Back to top |
|
 |
busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51124
Location: Surrey B.C. Canada, but thinking of Ukraine
|
| Posted: Sun Feb 07, 2021 11:29 am Post subject: Re: Mystery Liners |
|
|
Pretty sure those are NPR's.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
| Back to top |
|
|
airschooled
Air-Schooled
Joined: April 04, 2012
Posts: 12721
Location: on a bike ride somewhere
|
| Posted: Sun Feb 07, 2021 11:30 am Post subject: Re: Mystery Liners |
|
|
Interesting, the dishes have a sharper edge than I'm used to seeing.
What are "expansion plates?"
_________________
Learn how your vintage VW works. And why it doesn't!
One-on-one tech help for your Volkswagen:
www.airschooled.com |
|
| Back to top |
|
|
SGKent 
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
|
| Posted: Sun Feb 07, 2021 11:31 am Post subject: Re: Mystery Liners |
|
|
| airschooled wrote: |
Interesting, the dishes have a sharper edge than I'm used to seeing.
What are "expansion plates?" |
the steel plates on the inside of the pistons.
those fins are really heavy duty compared to Mahle or KS.
_________________
“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
| Back to top |
|
|
Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
|
| Posted: Sun Feb 07, 2021 11:53 am Post subject: Re: Mystery Liners |
|
|
Ah! NPR.. Forgot about them.
Pretty good stuff from Japan right?
You can see the expansion plates in the pic,
Either side of the wrist pin boss.
IIRC, AA don't have the plates..?
_________________
Bus Motor Build
What’s That Noise?!? |
|
| Back to top |
|
|
skills@eurocarsplus
Samba Peckerhead
Joined: January 01, 2007
Posts: 16862
Location: sticksville, ct.
|
| Posted: Sun Feb 07, 2021 12:46 pm Post subject: Re: Mystery Liners |
|
|
| Clatter wrote: |
(No that silver paint isn't my work)
Who can solve the mystery? |
GEX 
_________________
| gprudenciop wrote: |
my reason for switching to subaru is my german car was turning chinese so i said fuck it and went japanese....... |
| Jake Raby wrote: |
| Thanks for the correction. I used to be a nice guy, then I ruined it by exposing myself to the public. |
| Brian wrote: |
| Also the fact that people are agreeing with Skills, it's a turn of events for samba history |
|
|
| Back to top |
|
|
raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21511
Location: Oklahoma City
|
| Posted: Sun Feb 07, 2021 4:16 pm Post subject: Re: Mystery Liners |
|
|
| Clatter wrote: |
Ah! NPR.. Forgot about them.
Pretty good stuff from Japan right?
You can see the expansion plates in the pic,
Either side of the wrist pin boss.
IIRC, AA don't have the plates..? |
The dishes look a bit like NPR.....but show a picture of the inside of the piston. Some NPR that I have had in my hands have a shallow grid pattern relief cast into the top on the inside.
Also they could be Repco.....made in Australia. Both are excellent. A lot of Repco for VW was reboxed KS and Mahle. Ray |
|
| Back to top |
|
|
Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
|
| Posted: Mon Feb 08, 2021 3:11 pm Post subject: Re: Mystery Liners |
|
|
| skills@eurocarsplus wrote: |
| Clatter wrote: |
(No that silver paint isn't my work)
Who can solve the mystery? |
GEX |
Digging thru another shelf, and the heads i -think- came off this motor are GEX(!)
So i think we have a winner...
Good call Don.
I take it you have a lot of experience with GEX motors..? 
_________________
Bus Motor Build
What’s That Noise?!? |
|
| Back to top |
|
|
Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
|
| Posted: Mon Feb 08, 2021 3:39 pm Post subject: Re: Mystery Liners |
|
|
| raygreenwood wrote: |
| Clatter wrote: |
Ah! NPR.. Forgot about them.
Pretty good stuff from Japan right?
You can see the expansion plates in the pic,
Either side of the wrist pin boss.
IIRC, AA don't have the plates..? |
The dishes look a bit like NPR.....but show a picture of the inside of the piston. Some NPR that I have had in my hands have a shallow grid pattern relief cast into the top on the inside.
Also they could be Repco.....made in Australia. Both are excellent. A lot of Repco for VW was reboxed KS and Mahle. Ray |
_________________
Bus Motor Build
What’s That Noise?!? |
|
| Back to top |
|
|
Clatter
Samba Member
Joined: September 24, 2003
Posts: 7537
Location: Santa Cruz
|
| Posted: Mon Feb 08, 2021 3:46 pm Post subject: Re: Mystery Liners |
|
|
OK, say you work at GEX and you're re building a motor...
One head is bad on this motor, so you know the other one on the same motor of course is in perfect shape to last a long time...
Got to have a matched set of heads, you know... Quality goes in before the name goes on!
You'll want to take the time and make the AMC head you buy into a 'G' head like the other.
How do you do this, you might ask??
All it takes is a set of number stamps, of course!!
Viola! A matched set of 'G' heads, correct for this motor!
Also helps to have one kind of exhaust valve in one hole and a different one in the other.
The #3 chamber wants a bit more volume, right?
A tad lower compression because it runs hotter..
Fine, detailed building like this helps keep the head evenly heated when run.
Also,
If the plug insert sticks way into the chamber,
It can help hot starts by working like a glow plug? 
Very innovative motor engineering going on at our favorite engine house!
_________________
Bus Motor Build
What’s That Noise?!? |
|
| Back to top |
|
|
busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51124
Location: Surrey B.C. Canada, but thinking of Ukraine
|
| Posted: Mon Feb 08, 2021 4:02 pm Post subject: Re: Mystery Liners |
|
|
Why is the bottom of that head faced off?, has it been fly cut so deep it was hitting the fins before sealing up?
Some spectacular stuff going on in that one, seems we can all learn from the "pros" with many thousands of engines under their belt.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
| Back to top |
|
|
SGKent
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
|
| Posted: Mon Feb 08, 2021 4:23 pm Post subject: Re: Mystery Liners |
|
|
some shops face the bottom so they can mount it flat in a fixture to flycut it. The old RIMCO did that too.
Here is a photo I found of a couple NPR sets (prob 1800), samba gallery, and a VW vendor. Another photo of another set showed NPR stamped on the cylinder skirt right below where the fins start on the bottom.
_________________
“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
| Back to top |
|
|
raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21511
Location: Oklahoma City
|
| Posted: Mon Feb 08, 2021 5:17 pm Post subject: Re: Mystery Liners |
|
|
| Clatter wrote: |
| raygreenwood wrote: |
| Clatter wrote: |
Ah! NPR.. Forgot about them.
Pretty good stuff from Japan right?
You can see the expansion plates in the pic,
Either side of the wrist pin boss.
IIRC, AA don't have the plates..? |
The dishes look a bit like NPR.....but show a picture of the inside of the piston. Some NPR that I have had in my hands have a shallow grid pattern relief cast into the top on the inside.
Also they could be Repco.....made in Australia. Both are excellent. A lot of Repco for VW was reboxed KS and Mahle. Ray |
|
You know what....probably my bad. I am probabl thinking of Repco pjstons. I have two sets 1700 pistons only.
Ray |
|
| Back to top |
|
|
skills@eurocarsplus
Samba Peckerhead
Joined: January 01, 2007
Posts: 16862
Location: sticksville, ct.
|
| Posted: Mon Feb 08, 2021 6:33 pm Post subject: Re: Mystery Liners |
|
|
| Clatter wrote: |
Digging thru another shelf, and the heads i -think- came off this motor are GEX(!)
So i think we have a winner...
Good call Don.
I take it you have a lot of experience with GEX motors..? |
any self respecting shop rests their reputation on GEX. when you want quality, look no further than GEX. you see, at GEX they are the ultimate in carbon neutral rebuilding. how you ask?
well, at GEX if one case 1/2 is bad they find another. with a precision ball hone GEX will skillfully line bore the crank and cam journals to less than exacting specs.
cylinder heads? pfft...1300 on the left, 1600 on the right baby!
i've seen enough silver engines to know a GEX when i see one. sorry for your loss 
_________________
| gprudenciop wrote: |
my reason for switching to subaru is my german car was turning chinese so i said fuck it and went japanese....... |
| Jake Raby wrote: |
| Thanks for the correction. I used to be a nice guy, then I ruined it by exposing myself to the public. |
| Brian wrote: |
| Also the fact that people are agreeing with Skills, it's a turn of events for samba history |
|
|
| Back to top |
|
|
SGKent
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
|
| Posted: Mon Feb 08, 2021 7:12 pm Post subject: Re: Mystery Liners |
|
|
| skills@eurocarsplus wrote: |
any self respecting shop rests their reputation on GEX. when you want quality, look no further than GEX. you see, at GEX they are the ultimate in carbon neutral rebuilding. how you ask? |
gee Don - I thought you were going to say that their reputation from comments of others here is they got more CO2 emitting vehicles off the road than anyone else. And - they made money doing it without taxpayer subsidies. Think of the buses turned into homeless shelters when they broke down, or repurposed as chicken coops.
_________________
“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
| Back to top |
|
|
raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21511
Location: Oklahoma City
|
| Posted: Mon Feb 08, 2021 8:11 pm Post subject: Re: Mystery Liners |
|
|
| SGKent wrote: |
| skills@eurocarsplus wrote: |
any self respecting shop rests their reputation on GEX. when you want quality, look no further than GEX. you see, at GEX they are the ultimate in carbon neutral rebuilding. how you ask? |
gee Don - I thought you were going to say that their reputation from comments of others here is they got more CO2 emitting vehicles off the road than anyone else. And - they made money doing it without taxpayer subsidies. Think of the buses turned into homeless shelters when they broke down, or repurposed as chicken coops. |
You are both correct! The CO2 emitting vehicle finally exiting the road....is phase 2. A soft approach to forced compliance!
Ray |
|
| Back to top |
|
|
skills@eurocarsplus
Samba Peckerhead
Joined: January 01, 2007
Posts: 16862
Location: sticksville, ct.
|
| Posted: Mon Feb 08, 2021 8:18 pm Post subject: Re: Mystery Liners |
|
|
^^^^
i just can't believe they are still in business. that is truly amazing
_________________
| gprudenciop wrote: |
my reason for switching to subaru is my german car was turning chinese so i said fuck it and went japanese....... |
| Jake Raby wrote: |
| Thanks for the correction. I used to be a nice guy, then I ruined it by exposing myself to the public. |
| Brian wrote: |
| Also the fact that people are agreeing with Skills, it's a turn of events for samba history |
|
|
| Back to top |
|
|
RWK
Samba Member
Joined: June 24, 2009
Posts: 1348
Location: S.W. MI
|
| Posted: Tue Feb 09, 2021 6:49 am Post subject: Re: Mystery Liners |
|
|
| skills@eurocarsplus wrote: |
^^^^
i just can't believe they are still in business. that is truly amazing |
They obviously invested their profits wisely, knew investments better then engine building!
_________________
73 Type 181
63 Type 113
63 Type 261- 428 071
62 Type 241-378 025 178 530 |
|
| Back to top |
|
|
|
