what does this engine picture tell you?

billwagnon · 05-30-2002, 07:24 PM

It's a 2.4, Webers. Does the shot reveal any other interesting information (Carrera tensioners, etc)?

davis911s · davis911s's Garage

No carrera Tensioners sorry. No oil lines going down to the cam covers.

Shawn

jkeyzer · jkeyzer's Garage

No carerra tensioners. You could see the oil lines if it had them.

It has a red engine shroud, could be an S base engine but who knows.

It originally had MFI. It still has the original distributor, which has the vacuum box disconnected.

kstar · 05-30-2002, 07:37 PM

What's being shot into the aircleaners - fuel, NOS?

Also, looks like the vacuum advance/retard is not hooked up.

Best,

Kurt

Early_S_Man · 05-30-2002, 07:56 PM

1. Incorrect coil

2. Non-original wiring to coil ... no braided ground to CDI-unit!

3. Carb intakes vented to oil tank without a flametrap!

4. Inadequate fuel filter!

Saffs · 05-30-2002, 08:03 PM

If it's in the original car (which I doubt) it's a '73. Looks like an ignition rewire, as Warren says. Has the CD box been removed?

pwd72s · 05-30-2002, 08:05 PM

It's newer than a 1972...because the engine compartment color itself is red, not black. So are we being concours judges here? To be truthful, I see a lot of things I'm glad aren't in my engine area...

zuffenhausen · 05-30-2002, 08:20 PM

Quote:

Originally posted by Early_S_Man

3. Carb intakes vented to oil tank without a flametrap!

As long as we're being this critical, it's actually:

3. Oil tank vented to carb intakes without a flametrap.

So, what do I see when I look at that picture? A 911 engine that probably runs pretty well--and that always makes me smile.

By the way, as "incorrect" as it might be, the Bosch Blue coil has been a common performance upgrade for ages.

-zuff

Early_S_Man · 08:46 PM

zuff ... the Blue coil is NO UPGRADE to CDI-system performance!

Unless, of course, you choose to use a Clintonesque disclaimer about how you define 'upgrade!' Anecdotal stories about 'how it ran better' don't quite work! Just because a catalog listing or ad says something ... doesn't make it a fact!

By installing a Blue coil OR any other 'normal' aftermarket coil ... you jepardize the lifespan and reliability of the CDI-unit! The primary impedance is wrong, and the turns ratio is wrong by more than a factor of ten!

zuffenhausen · 05-30-2002, 09:35 PM

Early_S_Man,

If you look very carefully, you'll notice that this engine is not using a factory CDI, but a red MSD box. While not my first choice, the Bosch Blue coil would provide satisfactory service with this ignition.

As for your concern over a primary impedance mismatch with the factory CDI: If the output transistors in the CDI were specified and heatsinked properly they should tolerate a wide range of coil impedance with no significant effect on the life of the unit.

I don't care much for the factory CDI anyway. The sweet way to light off one of these carb'ed 911 engines is with a Crane or MSD box and a fat matched coil. 'nuff said.

-zuff

Early_S_Man · 05-30-2002, 09:57 PM

zuff,

CDI-systems don't use output transistors ... an SCR does the switching, and lack of heatsinking is not what causes the failures! Typically, a replacement coil will be found to have an intermittent short between the secondary winding back to the primary winding, and high Voltage on the order of thousands of Volts fed back into the CDI-unit breaks down the SCR, which is rated at 600 Volts! Even if the highest rated SCR available (1200 Volts) were substituted ... it would not make the CDI-unit resistant to overvoltage surges of several thousand Volts! The reason aftermarket coils short is because of the mismatch in the turns ratio!

billwagnon · 05-31-2002, 05:20 AM

Quote:

It's newer than a 1972...because the engine compartment color itself is red, not black. So are we being concours judges here? To be truthful, I see a lot of things I'm glad aren't in my engine area...

It's a 73, 2.4, I believe it's the original (rebuilt) T engine.

I'm looking for not for concours qualities, just for advice on 'issues'. I haven't bought the car yet.

What are the things you see that you don't like?

What I know - rebuild by 911 Engine Co of California about 3 years ago, MSD ignition, Weber IDA 40 carbs. I have no experience with 911 engines, so all comments are appreciated!

ErVikingo · 05-31-2002, 05:47 AM

The older I get, the wiser I get. Do a full PPI with leakdown, ....

I've been burned too many times before. And remember, everytome you take the engine of its Pandora's box once again.

Lets see, I took my engine out to correct and oil leak, I'm into 8K already. And yes, the only problem was a minor oil leak or so the PO said.

Looks like a bit too much work unless you are getting a really good deal. I like a clean engine compartment and it can be quite fun working on it. Can you afford the time??????

emcon5 · emcon5's Garage

Quote:

Originally posted by billwagnon
rebuild by 911 Engine Co of California about 3 years ago,

Link submitted without comment.

My Motormeister Story (Two Parts - Long)

billwagnon · 05-31-2002, 08:30 AM

C'mon emcon5, I need the comments!

"911 Engine Co" isn't a different name for MotorMeister, is it?

emcon5 · emcon5's Garage

I guess I read your post wrong. I read it as a generic description "a 911 engine co of California" which to me means one place.

If there is a buisiness named "911 Engine Co" and they did the rebuild, then please disregard.

The only thing I can add is that when it comes to major work, if there are no receipts, assume it didn't happen.

Tom

billwagnon · 05-31-2002, 08:40 AM

Thanks - I believe it was called "911 Engine Company" but if it's MotorMeister - should I run?

What are the threshold numbers for compression and leakdown tests?

911pcars · 05-31-2002, 08:51 AM

I hope I'm not being too anal here as I'm hardly a concours type person, but whenever I see wire management like this I wonder about the level of care in the installation of other items in the car. Let's hope this isn't a telltale sign the other upgrades/DIY repairs are finished in the same manner.

Sherwood Lee
http://members.rennlist.org/911pcars
www.seinesystems.com

pwd72s · 05-31-2002, 09:03 AM

I'm trying to post a pic of my stock '72 2.4 engine....so you can make comparisons.

Jim T · 05-31-2002, 09:10 AM

The missing fuel injection, kludged up wiring, and overall messiness makes that car unappealing to me, personally. Just looking at it, doesn't look like a well cared for car to me. Of course, that's a snap judgment based on one pic, but that pic definately doesn't give me the warm fuzzies, for sure.