| Author |
Message |
jonnypink
Samba Member
Joined: July 14, 2006
Posts: 126
Location: Chatsworth, CA
|
 Posted: Mon Apr 27, 2009 5:06 pm Post subject: Difference in 6mm and 8mm oil pumps |
 |
|
Does anyone know the difference in the oil pumps other than the stud size. I believe that the 6mm does not go in as deep, but want to verify.
_________________
66 Type I |
|
| Back to top |
|
 |
Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 79577
Location: Sneaking up behind you
|
| Posted: Mon Apr 27, 2009 6:03 pm Post subject: |
|
|
I "think" the 6mm have 21mm gears and the 8mm have 26mm gears.
_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
|
| Back to top |
|
|
AlteWagen
Troll
Joined: February 23, 2007
Posts: 8699
Location: PNW
|
|
| Back to top |
|
|
AlteWagen
Troll
Joined: February 23, 2007
Posts: 8699
Location: PNW
|
|
| Back to top |
|
|
Jeff Geisen
Samba Chaplain
Joined: December 21, 2004
Posts: 1932
Location: N.W. Georgia
|
| Posted: Sat Jul 19, 2025 1:52 pm Post subject: Re: Difference in 6mm and 8mm oil pumps |
|
|
I’m swapping engines in a bug with auto stick. Going from flat to dished cam. So I exchange the short gear/shaft in the oil pump for the dished cam part?
_________________
I Corinthians 4: 1 thru 5
‘63 ragtop - ‘68 single cab |
|
| Back to top |
|
|
Glenn
Mr. 010
Joined: December 25, 2001
Posts: 79577
Location: Sneaking up behind you
|
| Posted: Sat Jul 19, 2025 1:59 pm Post subject: Re: Difference in 6mm and 8mm oil pumps |
|
|
| Jeff Geisen wrote: |
| I’m swapping engines in a bug with auto stick. Going from flat to dished cam. So I exchange the short gear/shaft in the oil pump for the dished cam part? |
I guess that's your only option since autostick oil pumps are NLA.
_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
|
| Back to top |
|
|
zerotofifty
Samba Member
Joined: December 27, 2003
Posts: 3791
|
| Posted: Sat Jul 19, 2025 3:17 pm Post subject: Re: Difference in 6mm and 8mm oil pumps |
|
|
Use some clay on the end of the driven pump shaft and do a mock up assembly then remove and look at the clay impression so you can see how much the drive engages. you want enough engagement, but dont wont zero clearance between the pump drive shaft and bottom of the cam gear slot. clay can be used for this purpose, clay aint only for Gumbie.
_________________
Sorry About That Chief.
Give Peace a Chance.
Words to live by. |
|
| Back to top |
|
|
Cusser
Samba Member
Joined: October 02, 2006
Posts: 33109
Location: Hot Arizona
|
| Posted: Sat Jul 19, 2025 5:14 pm Post subject: Re: Difference in 6mm and 8mm oil pumps |
|
|
| Jeff Geisen wrote: |
| I’m swapping engines in a bug with auto stick. Going from flat to dished cam. So I exchange the short gear/shaft in the oil pump for the dished cam part? |
I did similar like 3 decades ago on a non-auto oil pump; actually it was a Claude's Buggies/CB Maxi2. I needed a Maxi2 for an engine with a dished camshaft gear, and would've ordered brand-new but CB was out of them/backordered at the time. So I took out the 26mm too-short gear and bought locally a 26mm VW oil pump for a dished cam gear, and used its long gear in the Maxi2.
3 decades, and it' been OK so far !!!
_________________
1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
|
| Back to top |
|
|
|
