Ryno's Cylinder head story.
- Ryno
- IAC Contributor
- Location: Lake Geneva, WI
- Status: Offline
Ryno's Cylinder head story.
OK. It all begins in late August 2008. I am preparing the bus to head to Missouri for the annual BNNTA event.
Checking timing, changing oil, nuts and bolt the entire bus and setting valve clearances. While performing the valve adjust, I find a rocker arm and exhaust valve that are not behaving quite right. So I remove the rocker assembly and check with a straight edge between the intake and exhaust on that cylinder and there's a 1/4" difference between the two. CRAP. Trip canceled. I hook onto our boat with the truck and head up north for a week of fishing instead.
Fast forward to March, my garage is clean and tools are organized, I'm ready for some fun.
I really don't know much about this engine other than it's an AVP rebuild with less than 25K on it.
There's sure gonna be some questions along the way, but I'm confident in my skills and the knowledge here at the IAC.
Checking timing, changing oil, nuts and bolt the entire bus and setting valve clearances. While performing the valve adjust, I find a rocker arm and exhaust valve that are not behaving quite right. So I remove the rocker assembly and check with a straight edge between the intake and exhaust on that cylinder and there's a 1/4" difference between the two. CRAP. Trip canceled. I hook onto our boat with the truck and head up north for a week of fishing instead.
Fast forward to March, my garage is clean and tools are organized, I'm ready for some fun.
I really don't know much about this engine other than it's an AVP rebuild with less than 25K on it.
There's sure gonna be some questions along the way, but I'm confident in my skills and the knowledge here at the IAC.
Ryan
1985 Westfalia
1985 Westfalia
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: Ryno's Cylinder head story.
This is a technical forum. At a bare minimum, we need to know year, make, model, engine specifications, history. Otherwise, if this is going to be a engine rebuild blog, I can move it to the Type2 forum. . . ColinRyno wrote:OK. It all begins in late August 2008. I am preparing the bus to head to Missouri for the annual BNNTA event.
Checking timing, changing oil, nuts and bolt the entire bus and setting valve clearances. While performing the valve adjust, I find a rocker arm and exhaust valve that are not behaving quite right. So I remove the rocker assembly and check with a straight edge between the intake and exhaust on that cylinder and there's a 1/4" difference between the two. CRAP. Trip canceled. I hook onto our boat with the truck and head up north for a week of fishing instead.
Fast forward to March, my garage is clean and tools are organized, I'm ready for some fun.
I really don't know much about this engine other than it's an AVP rebuild with less than 25K on it.
There's sure gonna be some questions along the way, but I'm confident in my skills and the knowledge here at the IAC.
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- Ryno
- IAC Contributor
- Location: Lake Geneva, WI
- Status: Offline
- Amskeptic
- IAC "Help Desk"
- Status: Offline
VW genuine heads?Ryno wrote:Well, I brought this head with me to work and I'm going to clean it up in the blast cabinet at lunch. So far, I can see no cracks between the valves.
I am thinking of sending both heads out to Headflow masters to have them re-worked.
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- Ryno
- IAC Contributor
- Location: Lake Geneva, WI
- Status: Offline
Yep. At least on the 1/2 side. P/N 022.101.372GAmskeptic wrote:VW genuine heads?Ryno wrote:Well, I brought this head with me to work and I'm going to clean it up in the blast cabinet at lunch. So far, I can see no cracks between the valves.
I am thinking of sending both heads out to Headflow masters to have them re-worked.
Colin
Ryan
Ryan
1985 Westfalia
1985 Westfalia
- Ryno
- IAC Contributor
- Location: Lake Geneva, WI
- Status: Offline
- Ryno
- IAC Contributor
- Location: Lake Geneva, WI
- Status: Offline
Pulled the 3/4 head tonight. Had to get nasty with a head stud, but I won. Another VW casting, so that's good. It appears to be in good shape also, but AVP did not seem to care where the sealing ring sat, check it out:
I heard back from headflow masters and they're giving me the option of bigger valves.
Any thoughts on this one without altering cam etc?
I run an SVDA dizzy with 36mm dell orto's.
I heard back from headflow masters and they're giving me the option of bigger valves.
Any thoughts on this one without altering cam etc?
I run an SVDA dizzy with 36mm dell orto's.
Ryan
1985 Westfalia
1985 Westfalia
- airkooledchris
- IAC Addict!
- Location: Eureka, California
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remember that AVP was the ones that reground the cam that is in there currently.
as long as your doing the heads, you may as well do the 9550 cam from RAT as well as the valve train hardware upgrade (switching to solid lifters in the process.)
im interested in how this turns out myself, as with the same rebuilder and a few less miles on mine im just waiting for the day when she blows. (up that is, she kinda blows already)
their head work wasn't exactly something to be proud of when I first saw it:
as long as your doing the heads, you may as well do the 9550 cam from RAT as well as the valve train hardware upgrade (switching to solid lifters in the process.)
im interested in how this turns out myself, as with the same rebuilder and a few less miles on mine im just waiting for the day when she blows. (up that is, she kinda blows already)
their head work wasn't exactly something to be proud of when I first saw it:
1979 California Transporter
- Ryno
- IAC Contributor
- Location: Lake Geneva, WI
- Status: Offline
- Ryno
- IAC Contributor
- Location: Lake Geneva, WI
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- spiffy
- IAC Addict!
- Location: Walla Walla, WA
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remember that it just isn't the volume but the velocity that is important.
For a stock cam you may want research just a set of nicely ported stock valve size heads. This way you would help out that intake velocity and smooth the exhaust flow thru the port. As you look at advice be careful not to get sucked into the bigger (valve) is better thang. I would also send a pm to the ACR for some more fuud for thought.
For a stock cam you may want research just a set of nicely ported stock valve size heads. This way you would help out that intake velocity and smooth the exhaust flow thru the port. As you look at advice be careful not to get sucked into the bigger (valve) is better thang. I would also send a pm to the ACR for some more fuud for thought.
78 Riviera "Spiffy"
67 Riviera "Bill"
67 Riviera "Bill"
- Ryno
- IAC Contributor
- Location: Lake Geneva, WI
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