Hold Off On Headflow Masters Engines

Moderators: Amskeptic, Sluggo

Post Reply
User avatar
airkooledchris
IAC Addict!
Location: Eureka, California
Contact:
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by airkooledchris » Tue Oct 18, 2016 9:02 am

sgkent wrote: People want something other than a stock cam so they ask for more and the engine builders, who don't have a lot of experience with heavy slow moving buses are using cams for lighter sportier cars that use the same engine.
Which, as you know, is sort of the correct way to go, given that the best cam most refer to is the one built for the Porsche 914 - a lighter sportier car that uses the same engine. =)

My bus has plenty of power, but it tends to run HOT and gives poor MPG at any mixture setting (so I run it crazy rich.) When it does finally kick the bucket, i'll be interested to know what they used in the last build. It's hydraulic but I have a feeling it isn't quite stock given the power it delivers above any bus that I have personally rode in.
1979 California Transporter

User avatar
Mike Boell
Old School!
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by Mike Boell » Mon Apr 16, 2018 8:36 am

This thread suddenly died 1-1/2 years ago, any "new" news?
Mike Boell
1975 FI Westy
Oregon City

SOME PEOPLE ARE LIKE SLINKIES - NOT REALLY GOOD FOR ANYTHING BUT THEY BRING A SMILE TO YOUR FACE WHEN THEY'RE PUSHED DOWN THE STAIRS.

User avatar
Amskeptic
IAC "Help Desk"
IAC "Help Desk"
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by Amskeptic » Mon Apr 23, 2018 7:54 am

Mike Boell wrote:
Mon Apr 16, 2018 8:36 am
This thread suddenly died 1-1/2 years ago, any "new" news?

I cannot vouch for any improvements in Adrian's shop, but if there are others who can offer the latest in their own personal experience, it would certainly be welcome. As ever, I strongly recommend that you keep your pressure relief valve system original.
Colin
BobD - 1978 Bus . . . . . . . . . . . 111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 108,000 miles
Pluck - 1973 Squareback . . . . . . 55,570 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

User avatar
asiab3
IAC Addict!
Location: San Diego, CA
Contact:
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by asiab3 » Mon Apr 23, 2018 11:42 pm

I visit Adrian every few weeks. He is still understaffed and including the ball valve modification on engines using old crank cases. I think he wants out of the engine building business and more into general repair and restoration.

Robbie
1969 bus, "Buddy."
119k miles with me.
296k miles on Earth.

71whitewesty
Getting Hooked!
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by 71whitewesty » Wed Apr 25, 2018 6:45 am

My HFM engine is still running perfectly since it’s install 3 years and 30k miles on it. I ordered another one for Bus 1 last summer and and I’ve yet to put 200 miles on it but no issues yet other than I need Colin to help me fine tune it.

User avatar
Mike Boell
Old School!
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by Mike Boell » Wed Apr 25, 2018 7:44 am

The reason I ask is I will be building a type 4 engine soon and purchased 2.0 AMC heads.
Of the those I have asked, half tell me "I need" to have them rebuilt and the other half say run them out of the box with some simple flashing clean-up and inspection.
Mike Boell
1975 FI Westy
Oregon City

SOME PEOPLE ARE LIKE SLINKIES - NOT REALLY GOOD FOR ANYTHING BUT THEY BRING A SMILE TO YOUR FACE WHEN THEY'RE PUSHED DOWN THE STAIRS.

User avatar
asiab3
IAC Addict!
Location: San Diego, CA
Contact:
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by asiab3 » Wed Apr 25, 2018 8:09 am

Last year a friend bought a bus with a fresh rebuild. Heads were SQUEAKY clean and branded AMC. He quickly found the #1 intake valve or seat receding a few hours every valve adjustment. (I do not recall if the valve pounded into a weak seat, or if the seat pounded into the head.) In a few months, there was no valve clearance available from any amount of adjustment, so he pulled the heads and installed a set of Adrian's reworked AMC heads. Now they cruise around Southern California at 70mph all day and don't look back.

One failure does not make a trend, but it makes me wonder about the quality of the valve and seat materials.
Robbie
1969 bus, "Buddy."
119k miles with me.
296k miles on Earth.

User avatar
Mike Boell
Old School!
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by Mike Boell » Wed Apr 25, 2018 8:27 am

"One failure does not make a trend" agreed.
One local builder says he installed out of the box AMC's on his wife's AC Vanagon, 60 miles a day M-F and two years in without a problem.
Mike Boell
1975 FI Westy
Oregon City

SOME PEOPLE ARE LIKE SLINKIES - NOT REALLY GOOD FOR ANYTHING BUT THEY BRING A SMILE TO YOUR FACE WHEN THEY'RE PUSHED DOWN THE STAIRS.

User avatar
Amskeptic
IAC "Help Desk"
IAC "Help Desk"
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by Amskeptic » Thu Apr 26, 2018 6:59 pm

Mike Boell wrote:
Wed Apr 25, 2018 8:27 am
"One failure does not make a trend" agreed.
One local builder says he installed out of the box AMC's on his wife's AC Vanagon, 60 miles a day M-F and two years in without a problem.
Mike, my intuition most-strongly recommends getting the very very very best quality valves, keepers, springs, guides, seats, available.

Even in VW's heyday, the engineers knew they were asking the metallurgy to work hard, and that was when quality actually meant something. The entire size and volume of the VW account made suppliers take pains to deliver exactly what was asked. Now we have aftermarket suppliers many of whom have likely never even owned or driven an air-cooled VW. NOBODY is yelling at them to keep the quality up. They are clueless to the fact that VW air-cooled heads run hotter than most any internal combustion engine extant. AMC slaps in parts that I seriously doubt have been tested in any serious way.
Colin
BobD - 1978 Bus . . . . . . . . . . . 111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 108,000 miles
Pluck - 1973 Squareback . . . . . . 55,570 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

User avatar
Mike Boell
Old School!
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by Mike Boell » Fri Apr 27, 2018 6:39 am

Colin, Thank you for chiming in. Asking about AMC's is like asking which brand and grade of oil to use.
Mike Boell
1975 FI Westy
Oregon City

SOME PEOPLE ARE LIKE SLINKIES - NOT REALLY GOOD FOR ANYTHING BUT THEY BRING A SMILE TO YOUR FACE WHEN THEY'RE PUSHED DOWN THE STAIRS.

Jivermo
IAC Addict!
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by Jivermo » Sun Apr 29, 2018 5:06 pm

Oh, and yes...my HFM 2.0 rebuild is running well, with only about 1000 miles on it. The prior one, with the leaking gallery plug, was a real heartbreaker, though. A lot of labor expended on my end. I do have a backup set of Adrian’s heads sitting on a shelf out in the barn, that I ordered at the same time. I don’t hear of problems with his head work, at all. Anyone have problems there?

User avatar
THall
Getting Hooked!
Location: Verona, Wisconsin
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by THall » Mon Apr 30, 2018 4:25 am

Jivermo wrote:
Sun Apr 29, 2018 5:06 pm
Oh, and yes...my HFM 2.0 rebuild is running well, with only about 1000 miles on it. I don’t hear of problems with his head work, at all. Anyone have problems there?
My HFM engine is running well with about 3k on it.
'78 Westy 2.0 FI

User avatar
asiab3
IAC Addict!
Location: San Diego, CA
Contact:
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by asiab3 » Mon Apr 30, 2018 7:50 pm

Jivermo wrote:
Sun Apr 29, 2018 5:06 pm
I don’t hear of problems with his head work, at all. Anyone have problems there?
Nothing here. I have two sets on my shelf right now, one stock single port Type 1 and another set of "performance " Type 1 heads. He did point out to me, at his shop last month, that he builds his engines with his machine work. Shops that farm out work, or DON'T build engines with their machine work miss mistakes like tools out of calibration, dull cutting machinery, and worn out jigs. Adrian said he's had all those problems, but caught them right away because he constantly builds engines with his own machine work. It made sense to me…

Robbie
1969 bus, "Buddy."
119k miles with me.
296k miles on Earth.

72Hardtop
Old School!
Location: Seattle, WA./HB. Ca./Shizuoka, Japan
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by 72Hardtop » Sat Oct 13, 2018 2:16 am

26,000 miles on my Headflow Masters T-4 re-worked AMC heads and running very strong. Bought them in early 2012 along with 96mm AA biral kit. Also installed Porsche swivel adjusters.
1972 Westy
2056cc T-4 - 7.8:1 CR
Weber 40mm Duals - 47.5idles, 125mains, F11 tubes, 190 Air corr., 28mm Vents
96mm AA Biral P/C's w/Hastings rings
42x36mm Heads (AMC- Headflow Masters) w/Porsche swivel adjusters
71mm Stroke
Web Cam 73 w/matched Web lifters
S&S 4-1 exhaust w/Walker 17862 quiet-pack
Bosch SVDA w/Pertronix module & flamethrower 40K coil (7* initial 28* total @3200+)
NGK B5ES @ .028
002 Trans
Hankook 185R14's

User avatar
Amskeptic
IAC "Help Desk"
IAC "Help Desk"
Status: Offline

Re: Hold Off On Headflow Masters Engines

Post by Amskeptic » Thu Nov 15, 2018 9:49 am

This engine was built by HFM in 2014. If you have any additional insight opinion about my recommendations, please let me know.
Colin

http://www.itinerant-air-cooled.com/vie ... 90#p231188
BobD - 1978 Bus . . . . . . . . . . . 111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 108,000 miles
Pluck - 1973 Squareback . . . . . . 55,570 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

Post Reply