911 Models And Technical Data

[rcecale]

This may have been posted here in the past, but I thought it may come in handy for people. It amazes me how some of you seem to be able to roll this info out of your head. But for those who can't and have questions....

Click here.

Randy

[HarryD]

Very nice. I have not seen that one before.

Here is one I like: http://www.idee.demon.nl/

[Grady Clay]

Randy & Harry,

Good reference sites. I’ll keep them.

The difficulty is there isn’t any “critical review” as there is on Pelican. Much of this information is accurate and worthwhile but some is subject to interpretation or possibly just plain in error. This is the beauty of Pelican; I get called on the carpet for anything questionable.

I don’t post as much as I could because I feel it necessary to be perfectly accurate, something hard to achieve.

Best,
Grady

[real550A]

Grady- Your credibility here is beyond reproach!
That's why I enjoy your posts so much. Always accurate, and always teaching me something!

[Grady Clay]

My point here is “Question Everything,” including anything I post. I certainly won’t be offended when someone demands clarity or refutes something I post. I’m not perfect. I post about one error per month. Some I catch. I am proud of the Forum when someone catches something I hadn’t thought about or had incorrect facts. Question Everything, argument is the spice of life.

I look at Pelican Forum as if it were a professional paper undergoing “peer review.” Since the Forum moves so fast, that is the only way to maintain accuracy in the posts – including mine.

Best,
Grady

[HarryD]

Grady,

Thanks.

I do agree that it is the ability and willingness of the posters here to both post and then accept review and constructive criticism that makes this all worthwhile.

[dd74]

Great site, Randy. Thanks!

[copper]

I concur with Grady about lack of review. I note that all 69 engines are shown as 2.2, which is incorrect, although the model assignments are there.

Grady, did you get my email regarding the smoke problem? I sent it through yesterday.

Jim

[oldE]

I think you would have to look at the "Porsche 911 World" site with the idea they were talking about the year production started, rather than model year. For example, they indicate the wheelbase extention occurred in 1968. That is correct, but it was on the B model cars, which were 1969 models. Same thing with the engine displacement increases and the later 3 mm wheelbase extention.
Les

[Grady Clay]

Jim,

No I didn’t. Please try again. Put 911, Pelican, or Porsche in the subject line. Sometimes my spam filter gets overly energetic. I am also on the Bluebirds list until I sell my ’72 510. I just checked that I didn’t accidentally put it there.

Best,
Grady
gradyclay@hotmail.com

[copper]

Thanks Grady

It was just a question in relation to tips for PPI that you had posted. You asked if there was smoke on hard decelleration on a downshift.

We had a Pelican group run with 15 of us this weekend. Had a spirited drive at about constant 4000 RPM. Noticed large puffs of smoke from the exhaust when rev matching my downshift. Never done this before, and doesn't do it around town. Seems to be only after longer durations of open highway at constant RPMs.

You seemed to be familiar with this. I was wondering what it may have been. I have 10W30 in it for the last 2 weeks and will be changing back to 20W50 next week. I've done 3 changes in the last month due to engine drops and other work.

Could the thinner 10W30 have been causing this?

Thanks
Jim

[Grady Clay]

Jim,

After some trailing throttle and you reapply gas you can get a puff of smoke from worn intake or exhaust valve guides, leaking intake valve seals, or rings not sealing. I suspect the engine temperature had something to do with it only happening on the highway and “spirited” driving.

A look at the spark plugs, cranking compression test and cylinder leak test will give you some more information. It never hurts to look around in the cylinders with a bore scope. Pay attention to your oil consumption. If things improve over the summer, it probably was the rings resealing after last winter’s “rest.”

You will just have to do more driving – too bad hehe.

Best,
Grady

[86 911]

Thank you for the helpful links. Not to get this off topic, but what does "NM" stand for when reffering to a car's engine power?

[rcecale]

Torque

NM = Newton Meters. It's the metric version of Foot Pounds.

1 NM = 0.7375621 Ft. Lbs.
1 Ft. Lb = 1.355818 NM

Randy

[86 911]

Thanks Randy.

[Wil Ferch]

Notice also the web page lists model year changes as they generally appeared on the Euro or world market..not the US intro typically one year later....

Wil

[widebody911]

Another ref page; I lifted this from Paul Weir's site before it went under

http://www.rennlight.com/light/engine-types.html

[Sumotang]

Here is some good info for the SC owners out there. I think there is a few on this forum.

http://www.adelgigs.com/911sc.shtml