Cam-driven PAS pump +305 5sp trans?

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nametooshort
Posts: 146
Joined: 22 Mar 2012, 09:22

Cam-driven PAS pump +305 5sp trans?

Unread post by nametooshort »

I am afraid it's another question from me (sorry!).

The one thing that really annoys me about my 305 is that it has non-power steering. I am pretty small (my excuse is that I am a bassist and tall bassists just don't look right!), and this car has heavy steering. I checked all the steering joints and strut tops and etc, and I am pretty sure there are no mechanical faults, its just that its...well, a reasonably big car with no power steering. All the other mods that I wanted to do (bosch pump and a turbo engine) can wait, but this one is really something I would like to achieve soon.

So I was looking at ways to fit power steering.

I noticed that racks don't seem to pose too much of a problem, by the looks of it a lot of French steering racks will fit as long as you use 305 tie bars/joints and find somewhere to put that shifter pivot the 305 has. The only critical dimensions is rack mounting points, the steering input shaft position/angle, and total rack length, which all seem to be very common amongst French cars, so I think the rack will not cause problems.

But I am looking for somewhere to mount the pump.

It looks like two options:

1) Scavenge the pump/crank pulley/alternator/mounting casting from a later car (205 etc) and mount all that on the crank end, converting to the bigger 4-rib belt etc.

2) My engine has the weird pulley sticking out of the 'wrong' side of the cam shaft, which powers the vacuum pump, so I could in theory scavenge a double cam pulley from a C15 or 205 or something, and use a power steering pump that mounts on the transmission.

I like idea No2 way more, because there is more room on that side of the engine etc.

The question is, would the transmission-mounted PAS pump (like 205 C15 etc) fit onto my 305 transmission?

I still have not learned all the different transmissions, but as far as I know this 5-speed manual which I have is a reasonably common transmission across the range. I also found 3 holes on the top of the transmission's top surface, which I assume are for mounting the pump in other vehicles?

Here is a photo of the holes:

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So I have a few questions:

1) Are these holes indeed for mounting the transmission-mounted PAS pump? The shifter lever looks kind of in the way, but maybe its just me, maybe the pump's base compensates for that.
2) Is this the correct pump? LINK
3)Anybody happen to know what size belt it uses?

Thank you!
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dieselnutjob
Posts: 328
Joined: 10 Apr 2009, 23:34

Re: Cam-driven PAS pump +305 5sp trans?

Unread post by dieselnutjob »

I think that your transmission mounted PAS pump will work. They also mounted the BX LHM pump on there. You need a 305 GTX PAS steering rack.
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spider
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Re: Cam-driven PAS pump +305 5sp trans?

Unread post by spider »

205's have the PAS pump driven from the other end of the cam, it has a double pulley (ie two belts) and a bracket or two to mount the pump. The reservoir lives on the front panel.

Its best to go and look at a later (M / N plate diesel) 205 as they nearly all had PAS to see what's what. I nearly did it to mine but stopped as it appeared I needed to change the column (a slightly shorter lower one to accommodate the new rack)
Andy.

91 205D-Turbo, gone but still missed
02 106D, TUD5B, gone but not really missed apart from the MPG
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nametooshort
Posts: 146
Joined: 22 Mar 2012, 09:22

Re: Cam-driven PAS pump +305 5sp trans?

Unread post by nametooshort »

Well, looks like I found myself a pump, so that's step 1 I guess.

Now just need a double cam pulley and a rack. Oh yeah and the belt, anybody happen to know what size it is?
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spider
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Re: Cam-driven PAS pump +305 5sp trans?

Unread post by spider »

Not off hand although if you ask for a 205 PAS belt you cannot really go wrong. 309's are similar too.
Andy.

91 205D-Turbo, gone but still missed
02 106D, TUD5B, gone but not really missed apart from the MPG
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nametooshort
Posts: 146
Joined: 22 Mar 2012, 09:22

Re: Cam-driven PAS pump +305 5sp trans?

Unread post by nametooshort »

Hello everybody.

Just a quick update, as usual I have been very busy (stupid deadlines) and havnt really had the chance to do all that much, however I did fit the pump bracket.

I found a bracket from a 205, however for some reason it did not fit onto my transmission. The nut that holds the shifter lever to it's splined shaft was too tall, and interfered with the pump bracket.

Everything else seemed to fit OK, and the actual pump wouldn't get in the way of the nut, so after a while I decided that maybe in this case, brute force IS the answer...so I did this.

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A buddy of mine has a machine shop, so I went there and just milled a 30mm hole in it!

After that, it fits fine, and the shifter lever nut just sticks through the hole and nothing is in the way of anything!

Image

I don't know why this is, I assume th 205 has a much shorter shifter lever assembly or something? But either way it worked.

So now I am looking for a double pulley
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nametooshort
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Re: Cam-driven PAS pump +305 5sp trans?

Unread post by nametooshort »

Oh, well, this is odd!

For some reason, I thought all cars that use this system have a double-pulley, with two belts, one for the vac pump and one for the PAS pump. But when I trial-fitted the pump today, it seems that all the pulleys line up with each other! So it seems I DONT need a double pulley after all?! This is odd, because literally every French car I ever seen which has cam-driven pumps had double pulleys.

I tried a few belts I had laying around, and a 9.5 x 740 was a good fit, so I used that.

So now the whole thing looks like this:

Image

So I decided to leave all that on there for now, but I didn't have a rack yet or header tank yet, there is nothing to connect the pump to. I think running the pump without fluid would damage it, since it won't be lubricated, so I found some random metal tank (a home-made Perkins diesel pre-heat fuel supply tank, actually, made from a paint solvent can), soldered input and output pipes to it, and connected it to the pump, just temporarily until I find a rack. So at the moment the pump is just pumping fluid from the tank and back into the tank, but at least that should stop the pump getting damaged until I find a rack and header tank.

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citroenxm
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Re: Cam-driven PAS pump +305 5sp trans?

Unread post by citroenxm »

Gearbox wise.. did all 305s have reverse up by 1st gear with the collar under the gear knob?? this could be the problem as 205s after 1988 adopted the later be3/5 box with reverse down beside 4th.. would that make a house difference and problems you have experianced.??
T
secondly.. i have a spare camshaft ... no use to me on xantias and xms.. any good for you?? i also have one of these older 5 speed gearboxs spare also no use to me.. i used the engine n a 1994 Zx so the box is surplus.. if they are any good as spares to you let me know.. pm me an offer they could be yours..

ps..I love the 305!! wish i could find one now.. id stick a td lump in one... brill cars...!!!
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
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nametooshort
Posts: 146
Joined: 22 Mar 2012, 09:22

Re: Cam-driven PAS pump +305 5sp trans?

Unread post by nametooshort »

Yes, mine has the 5-sp tranny with reverse by 1st. I didn't know 205s got different ones. But, it seems that now everything is OK, and somehow it all fits together.

Hmm, a spare cam shaft and transmission? Can't say I am not interested.

I loved the 305 as soon as I saw it, although to be honest I either never seen one or never noticed one before, so I didn't really know anything about them.

I was thinking about putting a TD engine into mine, or perhaps that weird 2.1 (triple valve?) thing, but for now I am keeping the stock 1.8d. Unfortunately, I have a very busy schedule, and limited time, and I don't really like getting other people to work on my cars (that would defeat the point of this hobby for me), so everything moves along very slowly.

Hopefully in a few months when we finish this project and the producers take over, I will actually get some spare time to mess with my cars, and THEN I will find some interesting engine for this car.

But for now I am afraid it's just the stock 1.8. Not that there is all that much wrong with it. Its not too fast, but it runs good and gets really good fuel mileage. Besides, Im kinda bored of fast cars. You can't go anywhere too fast these days, unless you live in like rural Idaho or something.
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User avatar
nametooshort
Posts: 146
Joined: 22 Mar 2012, 09:22

Re: Cam-driven PAS pump +305 5sp trans?

Unread post by nametooshort »

Well, another small update in my quest to get power steering, I found a suitable fluid reservoir.

It came out of a Boxer I think, or Ducato, or something like that.

I found a nice place for it on the firewall, and connected it to the pump. Since I don't have a rack yet, its just connected to the pump.

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Looks like it almost should be there I think!

Now I just need to find the ever-elusive rack!
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