Lipman '72 911T

Ian Donkin · Post by **Ian Donkin** » Thu Sep 04, 2008 8:06 am

Well done Jamie - another one here would like to take a peek at what you've done at the track day tomorrow.

tim78 · Post by **tim78** » Thu Sep 04, 2008 9:58 am

jamie wrote:YouTube clip for engine sound: http://www.youtube.com/watch?v=mX4LBziwuTU

Great stuff, lovely car. I marginally preferred the superstore Cossack video though

jamie · Post by **jamie** » Thu Sep 04, 2008 9:40 pm

tim78 wrote:
jamie wrote:YouTube clip for engine sound: http://www.youtube.com/watch?v=mX4LBziwuTU
Great stuff, lovely car. I marginally preferred the superstore Cossack video though

That's my brother. It was a few years ago when he was about eight. My flatmate and I dressed him up as an Afghan guerilla and filmed him Cossack dancing around Leytonstone Tesco at 11 at night.

Derek · Post by **Derek** » Thu Sep 04, 2008 9:51 pm

Cossack video is very funny

Bertroex · Post by **Bertroex** » Fri Sep 05, 2008 12:11 am

Mr Lipman Sir! What a set up

Fantastic

Bert

Ian Donkin · Post by **Ian Donkin** » Sat Sep 06, 2008 7:17 am

Saw Jamie and his handiwork at the track day yesterday and I have to say this is a really neat installation.

Great job Jamie

Greg · Post by **Greg** » Thu Sep 18, 2008 4:55 pm

Jamie - Great car. Love the color !!! As soon as I work out how to post pix I'll show you my new '67 911S Targa in exactly that color. Had to laugh about the carbs. Getting two banks of triple choke Webers to all sing from the same songsheet is a nightmare I am living daily !!

Cheers
Greg

jamie · Post by **jamie** » Fri Sep 19, 2008 9:56 pm

Wooha!

So I took the old map off, since it was giving loads of power but only 18mpg (!) and tried to remap it for a little more economy. This involved leaning the map off for everything but wide-open throttle, then adding fuel only when the throttle pedal is mashed to the floor.

It wouldn't work, and it was driving me mad. To cut a very long and frustrating story short, I fitted a TPS sensor, which isn't necessarily needed on this setup, then discovered not only was it screwed, but the 2 1/2 meters of tube I have running from the engine to the MAP sensor in the car is collapsing or leaking under vacuum. As a result, I only get 63kPa at idle. Most cars should give 30kPa.

Boom!

Kapow!

So there's something to work on. I have two choices - one, run some harder vac pipe or brake pipe from the engine to the ECU under the driver's seat, or run a 6-core cable from the ECU to the engine and situate the vac sensor there. I have all night to think about this...

912uk · Post by **912uk** » Fri Sep 19, 2008 11:06 pm

Derek wrote:Cossack video is very funny

classic, love it..

impmad2000 · Post by **impmad2000** » Sat Sep 20, 2008 8:32 am

jamie wrote: the 2 1/2 meters of tube I have running from the engine to the MAP sensor in the car is collapsing or leaking under vacuum.

I have a length of rigid small bore Pneumatic pipe (4mm OD) I bought for this reason. PM me an address and I'll get a few meters in the post to you.
OK ? See http://uk.rs-online.com/web/search/sear ... 35&x=0&y=0
You could always change the settings to run on an "Alpha N" map instead of a speed density map. The Alpha N map maps RPM vs TPS and is often used where high lift cams give poor vacuum and pulsing problems at tickover. The Speed density, which maps manifold pressure vs RPM should be fine. I'm not sure if there is a method which uses both methods, one at tickover and one under normal driving.
Great thing about MS is that you can fiddle, and if it doesn't work, restor settings and back to normal

Cool
Tim

jamie · Post by **jamie** » Sat Sep 20, 2008 5:47 pm

Cheers for the offer, Tim. I posted a message on the MS forums, and apparently the tube I have would not be an issue.

I realised my maps were scaled from like 20kPa to 120kPa, so I rescaled them to the operating vacuum of my engine, which is 60-100kPa, then re-plumbed some AFR figures and set it to autotune.

I have it aiming for 14:1 at 80mph cruise and 15.2:1 at 70-75mph cruise. Or something... Everything else is set really lean, except at 100kPa (ie. WOT) where it's set to 13:1

I fitted a new TPS from a Mk3 Golf VR6. It's a bit shite - MS think that closed throttle is 20% open, even after calibration, but it scales well to 100%. I'm using it for acceleration enrichments, which I think I have pretty much sorted.

Overall, I think the car is running a bit lean. But it drives well, and you really have to bounce on the throttle to get it to pop even lightly

Not as fast as the last map, but better MPG for sure. It's no less powerful than when it was on the carbs, and the throttle response is really excellent

Nice. Jelly Roll would be proud.

jamie · Post by **jamie** » Thu Oct 16, 2008 10:36 pm

Ian Donkin wrote:Well done Jamie - another one here would like to take a peek at what you've done at the track day tomorrow.

Happy days.

jamie · Post by **jamie** » Fri Oct 17, 2008 9:44 pm

I got back from work early today and took it out for a drive. I had been struggling with my EFI acceleration enrichments settings for weeks, but not driving the car for a while gave me a chance to think things through, and within a few hours I had the problem cornered.

It's a bit raucous, but it's hauling so awesomely I can't even describe it. I hadn't been completely satisfied with the conversion, but now I feel a massive sense of contentment and inner calm

I've done it. Just in time to sell.

I'll do it on the next car, too.

jamie · Post by **jamie** » Sun Oct 26, 2008 12:51 am

Last week I opened the garage door to discover this:

BAARRRGGGGGGGGGHHHHHHHHHHHHHHHHHHHH!

Fcker!

So today I did this...

... and dropped the panel off for a respray.

jamie · Post by **jamie** » Mon Nov 03, 2008 8:58 pm

Turns out the original steel number plate panel was a bit more corroded than I had thought. It had also had a tiny patch let-in where I guess the car had been reversed into something. My paint guy said it was worth replacing it.

So I bought an aluminium one. A friend who works nearby dropped it over this evening:

It's shiny. It's surprisingly light. Result