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jre Samba Member
Joined: August 29, 2008 Posts: 20 Location: Kingsport, Tennessee
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Posted: Tue Nov 25, 2008 6:49 pm Post subject: |
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Big Blue.....hate to hear that you are having problems with your rebuild. Hang in there and it will all come together for ya. BTW, I loved your video on your blog...big blue was purrin like a kitten and he will again. |
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BigBlueVW.blogspot.com Samba Member
Joined: October 04, 2007 Posts: 317 Location: Petaluma, CA
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Posted: Tue Nov 25, 2008 6:50 pm Post subject: |
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That's a good call. I'll check that tonight.
Thanks. _________________ '56 Bug - no name yet
'63 Bug "Little Blue"
'68 Bus "Big Blue"
Find bus camping friends at http://VWCamperFamily.com/
A west coast VW bus camping adventure at: http://bigbluevw.com/
Interested in VW buses and have a Facebook account? Check out Big Blue's Fan page: http://www.facebook.com/bigbluevw |
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BigBlueVW.blogspot.com Samba Member
Joined: October 04, 2007 Posts: 317 Location: Petaluma, CA
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Posted: Tue Nov 25, 2008 6:53 pm Post subject: |
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jre wrote: |
Big Blue.....hate to hear that you are having problems with your rebuild. Hang in there and it will all come together for ya. BTW, I loved your video on your blog...big blue was purrin like a kitten and he will again. |
Thanks, my friend. We'll get it figured out. _________________ '56 Bug - no name yet
'63 Bug "Little Blue"
'68 Bus "Big Blue"
Find bus camping friends at http://VWCamperFamily.com/
A west coast VW bus camping adventure at: http://bigbluevw.com/
Interested in VW buses and have a Facebook account? Check out Big Blue's Fan page: http://www.facebook.com/bigbluevw |
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akscooter Samba Member
Joined: September 25, 2008 Posts: 528 Location: Eastern Washington
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Posted: Tue Nov 25, 2008 6:53 pm Post subject: |
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If he put compression shims in, then seems to me that anytime you add to the cylinder it lowers the compression and throws of your fuel ratio. also causing less compression. thus less power.. I'm curious how far he shimmed it. also has it gone thru its break in period and has the rings set? _________________ 1975 campmobile
1949 Ply Special Deluxe
1991 Custom 1200 HD Sportster XLH |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50336
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Posted: Tue Nov 25, 2008 7:03 pm Post subject: |
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An 009 timed correctly shouldn't affect your full throttle power, only your part throttle power and the responsiveness. I would go for giving the shop a call and letting them figure out what happened. It is their job to do so. Very likely the throttle cable adjustment as someone already mentioned. |
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towd Samba Member
Joined: June 20, 2005 Posts: 2458
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Posted: Tue Nov 25, 2008 7:11 pm Post subject: |
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The work orde states replaced heads,, not P&C's or even rings.. but that they did reseal the cylinder to the case..
They put about 400 worth of parts at your cost ,, The rest is labor and they did a major screw up.. I would say they did not test drive the Bus..
AND there's this,, anytime you unhook fuel lines and reconect them,, there's a chance of dislodging crap,, and that plugging a carb..
bottom line 2200 bucks,, had you done your own work that would equal a new motor,, not a hi $$$ patch job. in fact 2200 bucks in a shop should have bought you a new motor ..
From the prices they charged you,, They must think there Damn good. |
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garykohl2 Samba Member
Joined: February 10, 2006 Posts: 530 Location: Lawrenceville, Ga.
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[email protected] Samba Member
Joined: June 14, 2002 Posts: 1663 Location: Palominas AZ
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Posted: Tue Nov 25, 2008 9:23 pm Post subject: |
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Quote: |
So, my question is - could I have actually lost power by going to the stock exhaust or going to the .009?
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This is the biggest question here. Minus one very important question...
Type IV or Type I engine --- BIG part is ---
What is your compression reading
What is your leak-down test?
Make sure you are over 90 on compression on all cylinders - and within 10% of each one...
100 100 100 90 is ok --- 80 110 110 100 is not
If thats fine...
Check your timing --- make sure you are making FULL advance around 28 degrees.
The mechanical advance CAN have an effect on acceleration - but NOT top speed ON FLATS - hills - different story.
Exhaust CAN have an effect - but not that BIG of an effect.
It could be a combination of factors. You mention the following changes
Head Work
Compression Shims
Distributor
Exhaust.
Enough negaive effect on all COULD cause you significant loss of power.
Confirm all operational parameters on each...
Compression check of 90+ on all cylinders
28 Total advance mechanical (vacuum advance is prefered).
Aside from that...hrm..... _________________ Ryan
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1963 Beetle
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keifernet Samba Search & Rescue
Joined: May 11, 2002 Posts: 19395 Location: Samba Center for Behavioral Science
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Posted: Tue Nov 25, 2008 9:35 pm Post subject: |
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[email protected] wrote: |
Quote: |
So, my question is - could I have actually lost power by going to the stock exhaust or going to the .009?
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This is the biggest question here. Minus one very important question...
Type IV or Type I engine --- BIG part is ---
What is your compression reading
What is your leak-down test?
Make sure you are over 90 on compression on all cylinders - and within 10% of each one...
100 100 100 90 is ok --- 80 110 110 100 is not
If thats fine...
Check your timing --- make sure you are making FULL advance around 28 degrees.
The mechanical advance CAN have an effect on acceleration - but NOT top speed ON FLATS - hills - different story.
Exhaust CAN have an effect - but not that BIG of an effect.
It could be a combination of factors. You mention the following changes
Head Work
Compression Shims
Distributor
Exhaust.
Enough negaive effect on all COULD cause you significant loss of power.
Confirm all operational parameters on each...
Compression check of 90+ on all cylinders
28 Total advance mechanical (vacuum advance is prefered).
Aside from that...hrm..... |
Ryan... read the thread eh? |
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BigBlueVW.blogspot.com Samba Member
Joined: October 04, 2007 Posts: 317 Location: Petaluma, CA
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Posted: Wed Nov 26, 2008 10:15 am Post subject: |
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Guys - thanks for all the suggestions. My wife banned me from the Samba last night as I had to pack for the holiday, so sorry I dropped off.
I'll do some testing on Sunday (if I get back in time) and talk to the shop on Monday.
I did test the throttle cable and it was set correctly.
The shims were 2mm shims and I see where that could take away from compression. I'll share what I find out when I test it.
Here's a little more info on the receipt I got from the place...
_________________ '56 Bug - no name yet
'63 Bug "Little Blue"
'68 Bus "Big Blue"
Find bus camping friends at http://VWCamperFamily.com/
A west coast VW bus camping adventure at: http://bigbluevw.com/
Interested in VW buses and have a Facebook account? Check out Big Blue's Fan page: http://www.facebook.com/bigbluevw |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50336
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Posted: Wed Nov 26, 2008 10:40 am Post subject: |
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2mm would be .082", that is a lot of compression lost particularly if you have AMC heads with the raised sealing area. You usually want your piston to head clearance to be in the order of .040". |
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tnpanscraper Samba Member
Joined: April 09, 2008 Posts: 588 Location: Knoxville TN
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Posted: Wed Nov 26, 2008 10:54 am Post subject: |
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Do you have an aftermarket oil filter kit? If not, you got ripped on the oil filter installation... _________________
VDubTech wrote: |
You would sooner have someone speedbag your nutsack than paint your tin white. |
1972 Square. Ratwagen
Click to view image |
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BigBlueVW.blogspot.com Samba Member
Joined: October 04, 2007 Posts: 317 Location: Petaluma, CA
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Posted: Wed Nov 26, 2008 11:00 am Post subject: |
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tnpanscraper wrote: |
Do you have an aftermarket oil filter kit? If not, you got ripped on the oil filter installation... |
Yeah - there's an external oil filter and cooler that the PO put in (controled by a switch in the dash which turns a fan on). I'm not sure it does anything to actually cool the oil, but the block is tapped, so I had to leave it.
here's a picture of it:
_________________ '56 Bug - no name yet
'63 Bug "Little Blue"
'68 Bus "Big Blue"
Find bus camping friends at http://VWCamperFamily.com/
A west coast VW bus camping adventure at: http://bigbluevw.com/
Interested in VW buses and have a Facebook account? Check out Big Blue's Fan page: http://www.facebook.com/bigbluevw |
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tnpanscraper Samba Member
Joined: April 09, 2008 Posts: 588 Location: Knoxville TN
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Posted: Wed Nov 26, 2008 11:04 am Post subject: |
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Cool man.... Does it smoke(burn oil) when you accelerate? _________________
VDubTech wrote: |
You would sooner have someone speedbag your nutsack than paint your tin white. |
1972 Square. Ratwagen
Click to view image |
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BigBlueVW.blogspot.com Samba Member
Joined: October 04, 2007 Posts: 317 Location: Petaluma, CA
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Posted: Wed Nov 26, 2008 11:07 am Post subject: |
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Here are some pictures from when I stopped by and checked on the work:
_________________ '56 Bug - no name yet
'63 Bug "Little Blue"
'68 Bus "Big Blue"
Find bus camping friends at http://VWCamperFamily.com/
A west coast VW bus camping adventure at: http://bigbluevw.com/
Interested in VW buses and have a Facebook account? Check out Big Blue's Fan page: http://www.facebook.com/bigbluevw |
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BigBlueVW.blogspot.com Samba Member
Joined: October 04, 2007 Posts: 317 Location: Petaluma, CA
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Posted: Wed Nov 26, 2008 11:08 am Post subject: |
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tnpanscraper wrote: |
Cool man.... Does it smoke(burn oil) when you accelerate? |
The only thing that I smell since having it back it what I assume to be the coating/paint in the new muffler/exhaust. No oil burning. Never has burned oil. _________________ '56 Bug - no name yet
'63 Bug "Little Blue"
'68 Bus "Big Blue"
Find bus camping friends at http://VWCamperFamily.com/
A west coast VW bus camping adventure at: http://bigbluevw.com/
Interested in VW buses and have a Facebook account? Check out Big Blue's Fan page: http://www.facebook.com/bigbluevw |
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tnpanscraper Samba Member
Joined: April 09, 2008 Posts: 588 Location: Knoxville TN
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Posted: Wed Nov 26, 2008 11:09 am Post subject: |
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Nice heat exchangers... I could use some new ones also... _________________
VDubTech wrote: |
You would sooner have someone speedbag your nutsack than paint your tin white. |
1972 Square. Ratwagen
Click to view image |
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tnpanscraper Samba Member
Joined: April 09, 2008 Posts: 588 Location: Knoxville TN
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Posted: Wed Nov 26, 2008 11:10 am Post subject: |
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Sounds like it needs a valve adjustment and shim removal... Maybe reset the timing... Of course that's been said... _________________
VDubTech wrote: |
You would sooner have someone speedbag your nutsack than paint your tin white. |
1972 Square. Ratwagen
Click to view image |
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BigBlueVW.blogspot.com Samba Member
Joined: October 04, 2007 Posts: 317 Location: Petaluma, CA
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Posted: Wed Nov 26, 2008 11:15 am Post subject: |
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It seems that a compression test will give me the insight I need, huh? _________________ '56 Bug - no name yet
'63 Bug "Little Blue"
'68 Bus "Big Blue"
Find bus camping friends at http://VWCamperFamily.com/
A west coast VW bus camping adventure at: http://bigbluevw.com/
Interested in VW buses and have a Facebook account? Check out Big Blue's Fan page: http://www.facebook.com/bigbluevw |
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tnpanscraper Samba Member
Joined: April 09, 2008 Posts: 588 Location: Knoxville TN
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Posted: Wed Nov 26, 2008 11:24 am Post subject: |
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Yes....Good Luck... _________________
VDubTech wrote: |
You would sooner have someone speedbag your nutsack than paint your tin white. |
1972 Square. Ratwagen
Click to view image |
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