Excellent!

I'm re-posting this so the information is on this page as well as the last:

Introductory Price of $97.95 is good from now thru July 31, 2012.
I expect to atart shipping kits by late August if I get enough sales quickly.
(I need about 100 orders, have 23 as of 07/09/12)

A Tuning Kit is available with a special hollow 7mm hex tool, small flat blade screwdriver, and new Full Throttle Stop Screw.
Tuning Kit introductory price - $42.95
Both Kits Together - $132.95
Prices include shipping.
Order using Paypal from our Whats New Page.

I am one too, Chris. I need to get two, but dont think i can swing it right now. I was hoping they would be a little less. . I am certainly thankful that you have come up.with this solution!

Phil

I need to add 2 throttle stop screws.

I will be selling the stop screws and the hollow hex drivers separately, once I have inventory.

Just ordered both from your site & paid with Paypal. Thanks for setting this up. Hopefully we will get everybody else commited too.

I will be interested in somebody willing to do the rebuild too. I'll check with Bleysing (Geoff) . Anybody else do them?

Thanks Jamie!
I got an order from the first Volvo owner this morning too.

Here's a model of the new stop screw.
Solidworks won't draw the M16 external threads though.

Click to view attachment

FYI- One lister on the benzworld.org site questions if Benz MPS diaphrams are identical to the Porsche design? Do we know for certain? He also suggests that used Benz MPS units are plentiful and cheap. Any insight?

http://www.benzworld.org/forums/r-c107-sl-...tml#post5330100

I'd be surprised if the diaphragm is much different, but it should be easy enough to purchase a MB unit, knowing they're plentiful, and pull it apart for analysis.

Edit: I'm watching one on eBay with a starting price of $35, 6 days to go.

It looks the same. Here's the 914 diaphragm from pbanders


and from a writeup by a merc guy


Here's the thread for that. They are looking for a manufacturer of the diaphragm there, too.
http://forum.w116.org/mechanicals/manifold...repair-attempt/

PayPal'd for 2 tonight, Chris

31 Paid.
69 to go

Chris,

thanks again for taking this monumental project on...
order in
brant

I got a refund for overpayment. It's nice dealing with honest people. Especially with my math skills.

You didn't make a mistake. It was because you ordered two diaphragm kits.
Anytime a customer orders multiple items and I can save them a few $$ by packing in one box, I refund the excess shipping paid.

Hey Chris....I am in for the Combo Kit, Pay Pal sent, and will try to order another one before July's end. Will I need to order another tool kit to get the FTS Screw?

Thanks Jerry! We're offically past the 1/3 mark to get the diaphragms made.

I'll be selling the stop screws separately once I have them in stock, so you don't need to buy a second tuning kit.

I'm in for 1 combo kit.

My Mercedes MPS arrived today!
Bosch P/N 0 280 100 100

and..........?

Used on Mercedes Benz 4.5L engines between 1971 - 1975.

001 = VW 311
003 = VW/Porsche
007 = VW 311
009 = Saab
012 = Mercedes Benz
035 = Volvo
037 = VW/Porsche
041 = Porsche 1.7
043 = VW/Porsche
049 = VW/Porsche
053 = Volvo
054 = Volvo
056 = Volvo
059 = Volvo
100 = as above
106 = VW
111 = Mercedes Benz
116 = VW

Just a few to choose from ......... I actually show at least 52 different numbers on MPSs.

Hey Ron where are you getting these part numbers from?

John

I am a core supplier and have the Bosch ESI CD set.

...and I hooked it up to my car for a quick test.
The engine starts but needs some throttle to keep it going.
The O2 gauge says it's lean, and judging by how poorly it ran I concur.
It was bad enough that I didn't bother with a road test.

I didn't pay much attention to the fact that the exterior has some obvious differences and took the cover off and see just what the internal differences are.
If I was paying more attention I would have already known to expect something was up. The cover isn't as big as on our MPS units, there is no full load stop screw epoxied in place, and there are no vent holes.

The first thing I noticed inside is that the aneroid cell doesn't fall out.
Its attached to the cover somehow.
In fact, there is no diaphragm, and it appears that the in-hex screw on the end simply moves the aneroid cell in and out to adjust the inductance range.
Without any vents, the entire chamber is exposed to manifold pressure.

Yep....Brad Anders site:

Note that Mercedes-Benz went a different way with their early Bosch pressure sensors (e.g. 0 280 100 100). These sensors also lacked a full-load diaphragm and used a contact in the throttle switch to sense the full-load condition. The sensor also used a unique pressure cell design where one cell was evacuated, and the other was connected to atmospheric pressure by a hollow screw (also used for the part-load mixture adjustment). The atmospheric cell enabled this sensor to correct the mixture for altitude variations.

I adjusted the unit to richen the mixture and my engine ran much better, but it didn't respond properly over the full range of load and rpm.
Notably, it went lean under load at higher rpms.

Full load stop screws were ordered from my machinist last week.
But we need a lot more repair kit orders before the diaphragms can be made.


See my signature line for a link to the Tangerine Racing webpage to place your order.

Order placed! Thanks for supporting our habit!

bump...

I hope all of the posters in this thread follow through with their verbal commitments...


this is an amazing product that we have been asking to have reproduced for a decade now....

it would be an absolute shame to not reach the minimum orders to produce this!

I'd committed to one, but finally got around to paying just now. It's still 7/31 in Mountain Standard Time :-)

We are very, very fortunate to have vendors such as Racer Chris who are willing to take on and develop extremely high quality parts. The lack of units such as this one is one main reason I went on to build a Sixer instead of staying with the Four. I have purchased from Chris other parts and they are well thought out and the highest quality.

If you have a need for this part, please get it from Chris. He provides some of the best service and support one can find.

I just may have to start another project next year and build a stock four with D-Jet injection.

Got to keep this thread alive until the majic "100" is reached.

Steve

Just wondering what the status was on our orders.

Thanks.

Kind of lost track of this thread. Glad to hear we have a way to rebuild the MPS! Ordered mine tonight.

This is taking longer than I had hoped, but I'm still optimistic.

My break even point is about 140, but I'm prepared to have diaphragms stamped with 100 orders or less in hand.
Meanwhile I'm accumulating the smaller pieces so kits can be assembled and shipped quickly.

I have 42 diaphragm kits paid for as of today, thanks Jacob.

Thanks for doing this. I'm sending someone to you for fuel lines to help subsidize this project
Any luck with any of the other cars out there that use this diaphram?

I ordered my repair and tune up kits last night; also took apart my leaking MPS and found that the diaphragm had been previously patched at the flange. It looked like a pro job but obviously found a
way to start leaking again. Following the info on the Anders site, the dis-assembly process was really
pretty easy....just took about an hour of being patient and not forcing the thing. It's all ready for a
new diaphragm! Oh and mine looks like brass, not copper...

Another Volvo owner dropped out and asked for his money back.
That puts us at 45.

On a more positive note, business has been good lately and I may be able to order the tooling before we reach 100 orders.
However, for anyone on the fence here, you should buy now while the price is good. Today is the last day at the current discounted price.
I'm seriously considering raising the regular retail price above what I posted previously, in order to offset the extremely long term before I see a return on investment.

Chris,
i just ordered 2 kits about 10 minutes ago

Due to the storms and rain - flooding we have had internet inteription for several days. Hadnt been able to get connection till tonight. Finally got my phone to work sorry about it being the last minute.
Phil

Thanks Philip.
Your order plus one more received last night puts us at 48 units sold.

After Labor Day the Diaphragm Kit price goes up to $127.95 thru Sept.
The regular price will be $139.95.

Quantity discounts will be available for vendors.

The Tuning Kit price remains at $46.95.
Combined price for both kits is less $7.95.

Webpage link for Paypal is in my signature.

A few more units sold thru the holiday weekend.
I'm placing my order for diaphragm stampings this week in spite of not reaching the pre-production sales goal.

Excellent news!! Thanks Chris

Hurry up bro....

I have been waiting 33 years for this kit.

Just wondering if there was any update for kit delivery times.

Thanks.

The only part I've gotten word on from my vendors is the full load stop screws which are being shipped to me now.
No other updates available.

Any updates?

Sweet. Thx again, Chris. I'll bet orders pick up when peeps begin reporting the results.

Waiting for the diaphragms.

Don't forget to order one of these or at least add one to your Christmas wish list.

Nice...I would like 1 please.

Have no idea what condition mine is in yet, but even if I find out it's OK in a month or three, it won't be forever.