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Showing results 1 to 25 of 290
Search took 0.03 seconds. Search: Posts Made By: PFM
Forum: 911 Engine Rebuilding Forum 12-25-2016, 03:06 PM
Replies: 20
Views: 2,640
Posted By PFM
The header length calculations are just not that...

The header length calculations are just not that accurate. PipeMax can get you very close but still not 100%. Build it as short as possible with a few pipe diameters straight before the collector....
Forum: 911 Engine Rebuilding Forum 05-14-2015, 08:40 PM
Replies: 83
Views: 13,733
Posted By PFM
Henry, We may not always see eye to eye but...

Henry,

We may not always see eye to eye but I must salute the obvious first class nature of your builds! The motors you and your team put together look to be beyond first class.

Best regards,
...
Forum: Porsche 911 Technical Forum 08-12-2014, 08:50 PM
Replies: 49
Views: 4,694
Posted By PFM
Jung, FWI if those are full power full load...

Jung,

FWI if those are full power full load passes I would back off sooner than later or you will be doing all this again. Full load at 13.5 AF stops us on the dyno cold at 15.0 AF we pull it or...
Forum: 911 Engine Rebuilding Forum 07-30-2014, 08:55 PM
Replies: 54
Views: 8,316
Posted By PFM
Jungspike, It will take some work to get the...

Jungspike,

It will take some work to get the rings settled in to get the real results. Please go through the fuel system carefully as the dyno run was very lean. Also check the ignition timing...
Forum: 911 Engine Rebuilding Forum 07-21-2014, 10:02 PM
Replies: 24
Views: 5,516
Posted By PFM
Neilca, I see some questions in the photos...

Neilca,

I see some questions in the photos first you have grooves cut in all the mains, when cross drilling the crank I have seen the center main grooved AND the feed in the case bored a bit...
Forum: 911 Engine Rebuilding Forum 05-04-2014, 08:49 AM
Replies: 19
Views: 1,799
Posted By PFM
Crumm, FYI ARP now makes a nice set of...

Crumm,

FYI ARP now makes a nice set of flywheel bolts for the 6 bolt flywheels. Still thinking of adding an AASCO to my 914 project.
Forum: 911 Engine Rebuilding Forum 04-29-2014, 10:21 PM
Replies: 54
Views: 8,316
Posted By PFM
Jungspike, FWIW the dyno shop has some hand...

Jungspike,

FWIW the dyno shop has some hand in this as well IMHO. On the dyno at the shops I have been at the AF ratio you had would have been cause to shut it down and resolve the problem not...
Forum: 911 Engine Rebuilding Forum 04-10-2014, 05:58 AM
Replies: 54
Views: 8,316
Posted By PFM
Jim, So do you have an update on this?

Jim,

So do you have an update on this?
Forum: 911 Engine Rebuilding Forum 03-31-2014, 08:51 PM
Replies: 20
Views: 3,688
Posted By PFM
FWIW... To knife edge is as Steve said maybe...

FWIW...

To knife edge is as Steve said maybe not a worth while investment if the RPMs are kept in check. That said if light weight pistons and pins will be used having some weight removed from the...
Forum: 911 Engine Rebuilding Forum 03-28-2014, 08:16 PM
Replies: 54
Views: 8,316
Posted By PFM
I sit corrected... Teach me to reply from work...

I sit corrected... Teach me to reply from work without looking at my data....
Forum: 911 Engine Rebuilding Forum 03-28-2014, 12:36 PM
Replies: 54
Views: 8,316
Posted By PFM
Steve, Since the motor is normaly aspirated...

Steve,

Since the motor is normaly aspirated peak fuel usage normaly happens at or near peak TQ. So I do not agree. I would still be looking at fuel. An easy test is turn the pressure up a few...
Forum: 911 Engine Rebuilding Forum 03-26-2014, 08:10 PM
Replies: 54
Views: 8,316
Posted By PFM
Jim, Get your part number and check hereStan...

Jim,

Get your part number and check hereStan Weiss' - Electronic Fuel Injector (EFI) Flow Data Table (http://users.erols.com/srweiss/tableifc.htm#BOSCH) to see what pound per hour and at what fuel...
Forum: 911 Engine Rebuilding Forum 03-25-2014, 08:06 PM
Replies: 54
Views: 8,316
Posted By PFM
Tim, I am glad the builder is looking at...

Tim,

I am glad the builder is looking at fuel pressure. I questioned the alcohol only because it takes even MORE injector to handle that. What injectors do you have? I maxed out my 3.6 injectors...
Forum: 911 Engine Rebuilding Forum 03-24-2014, 08:10 PM
Replies: 54
Views: 8,316
Posted By PFM
Tim, What fuel were you running? Did it have...

Tim,

What fuel were you running? Did it have any alcohol content? As the motor was super lean near PK TQ it is possible you ran it out of injector. Do you know what fuel pressure you have? Can you...
Forum: 911 Engine Rebuilding Forum 03-05-2014, 06:27 AM
Replies: 39
Views: 5,634
Posted By PFM
James, Are you trying to get to a place more...

James,

Are you trying to get to a place more like this?
http://i900.photobucket.com/albums/ac204/dfriedeck/Porsche/CPPistonin3D.jpg

If you have a good piston vice for your mill you could get...
Forum: 911 Engine Rebuilding Forum 03-03-2014, 09:47 PM
Replies: 65
Views: 12,642
Posted By PFM
Every 914 / 6 guy wants this one as it will bolt...

Every 914 / 6 guy wants this one as it will bolt to the 901 and fit in the 914. I hope to be back on the dyno soon to finish up mine.

Enjoy,
Forum: 911 Engine Rebuilding Forum 01-16-2014, 08:28 PM
Replies: 7
Views: 662
Posted By PFM
John, If lots of shims are required it...

John,

If lots of shims are required it sounds like you may have another problem. New valves, new size, new seats. Is the valve length correct? It should not take a "bunch" of shims. This may be...
Forum: Porsche 911 Used Parts For Sale & Wanted 12-04-2013, 05:18 PM
Replies: 4
Views: 681
Posted By PFM
Headed for Ebay

Headed for Ebay
Forum: Porsche 911 Used Parts For Sale & Wanted 12-01-2013, 08:45 AM
Replies: 4
Views: 681
Posted By PFM
Bump..... More photos on request. Used not new.

Bump..... More photos on request. Used not new.
Forum: Porsche 911 Used Parts For Sale & Wanted 11-29-2013, 09:27 PM
Replies: 4
Views: 681
Posted By PFM
Electromotive HPV-1 Twin Plug

All,

The my motor is together now time to sell some of the "extra" parts not used to complete the build. Thought I would give the Pelican's the first shot. Here we have Electromotive HPV-1 Twin...
Forum: 911 Engine Rebuilding Forum 10-20-2013, 01:47 PM
Replies: 8
Views: 1,020
Posted By PFM
3literpwr, You are correct to ask about TQ....

3literpwr,

You are correct to ask about TQ. The change in compression should be coupled with a cam change to optimize the power curve. If all things remain unchanged the TQ increases a bit more at...
Forum: 911 Engine Rebuilding Forum 10-18-2013, 09:39 PM
Replies: 37
Views: 4,759
Posted By PFM
Henry, What year was this? I recognize...

Henry,

What year was this? I recognize Martin's car but cannot place your 914. Mid 1990s?
Forum: Porsche 914 & 914-6 Technical Forum 10-13-2013, 08:27 AM
Replies: 7
Views: 1,605
Posted By PFM
Mark, If one of the lines failed the other...

Mark,

If one of the lines failed the other is close behind. If you are still using both lines (EFI) it would be wise to replace both lines that pass through the tunnel. As you know a failure...
Forum: Porsche 914 & 914-6 Technical Forum 10-10-2013, 07:52 PM
Replies: 359
Views: 54,891
Posted By PFM
GladMister, Check your SCCA rules but MAYBE...

GladMister,

Check your SCCA rules but MAYBE you can fit a MegaSquirt inside the original FI "ECU" box and still be legal. I am not suggesting a cheat, check the rules. I do know it would run...
Forum: 911 Engine Rebuilding Forum 09-19-2013, 05:51 PM
Replies: 68
Views: 11,077
Posted By PFM
James, The real beauty of offset boring the...

James,

The real beauty of offset boring the rods is you can make them the length you need for perfect deck height. So as above pre assemble measure and build the rod length to fit.
Showing results 1 to 25 of 290
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