Carb talk/ Paddy B discusions

avenga · November 09, 2011, 02:26:56 PM

My Charger has a BW35.

oldschool · November 09, 2011, 10:17:45 PM

Yes a great auto used in many old Fords, Chryslers/Hillmans, Jags, Rovers, Triumphs and even the Morris Marina....cringe!!
I've just never seen an auto (BW35) 1500 Avenger. Maybe they didn't sell the auto here until the 1974 update when the BW45 was fitted?

NZTiger · November 09, 2011, 10:52:27 PM

Autos and 1.75 carbs....

All 1500 NZ built Avengers were manuals, the first 4 speed auto made here was the Alpine GLS first built January 75. After that (not exactly sure when) autos were also put in a small number of 1600 Supers. Not sure about imports if any were autos.

Carbs...Twin CD150 were fitted to "TC" engine that also had double valve spring, duplex timing chain and very good cam. Started here in 1500TC then 1500 Alpine 1600 Alpine and Alpine GLS. The last Alpines built in 77 had the same engine but were then fitted with 1x175 carb. only a very small number were made. (I have one)
With the Chrysler Avengers started in late 77 the model range changed and the GLS now had the "Super" engine with single valve spring and single row cam chain

Paddy75 · November 10, 2011, 12:06:33 AM

As far as I can tell the SU was fitted after 04/75 build. According to the '74 Avengers photographed in Brighton' brochure I got the 4speed auto was an option from the October '73 onwards model because the brochure stated:
''..for '74 Chrysler has secured the Borg Warner four speed as an option..'' so I don't think any of the 1500cc Avengers had the four speed.
Likewise as for the Sutpidly Usless BL type carb that was not seen on the '74 model photos and according to a '76 Chrysler brochure (the last year of the Hillmans) it briefly mentions the 1.75'' carburettor so I'm guessing the SU was used only from 04/75-end/76. This model is also the one with the overiders on the bumpers on the Super and GL models - at least those badly made in the UK! Bless Todd Motors for the use of decent underseal!!!

From what you guys say it sounds like the NZ Avengers didn't use the SU (perhaps only on the Auto) and looking at the ebay advert for the Hillman '76 Auto thats a late model post Oct '73 'round badge' model.
So the round badgers (the badge on the grille went from rectangular to circular with the 1250/1300 - 1500/1600 Oct '73 upgrades)
Oct'73-apr'75 round badgers with Stromberg, apr'75-end'76 SU round badgers.

The inlet manifold on mine looks like its made for the 1.75, I'll take a snapshot of it with the carbie removed, I'm again guessing therefore the manifiold is therefore ideal for the Tiger head - with a single carbie. Hmmm I'm still in a half mind about fitting that big valve head. The engine is the original unit and I don't want to wreck the bottom end on it, then add drum brakes into the equation!!!!

Anyhow I hope the Stromberg arrives by Saturday morning, I'm in Dublin during the week and only back at the home place on the weekends. I don't want to take d'Avenger on the M1 again untill its geared up, come to think of it that bastard worn out SU probabbly, with the silted up coolant, caused that car to overheat on the M40 in England when I was taking her over.
F****** British Leyland dammed parts!

oldschool · November 10, 2011, 10:17:43 AM

Looks like Logan's 1600 auto is one of the oldest in NZ then, registered in Feb 1975 and still going strong!!
Seems the SU carb was only fitted in the 1300cc NZ Avengers...thankfully!!
Todds were all over the place here with Avenger motors....my 1974 1600 Super has a factory fitted double row timing chain and double valve spring Alpine motor with a single Alpine carb, while my 1975 Alpine 1600 TC has a single row timing chain with double valve springs and my 1979 1600 GLS has a double row timing chain with single valves springs...go figure??

avenga · November 10, 2011, 10:36:37 AM

Maybe they just had a lucky dip bin in the engine room.

oldschool · November 10, 2011, 10:44:24 AM

For sure Richard...now I know why Scarlett's so economical...the single Alpine carb is jetted for 800cc...haha

hunted · November 10, 2011, 10:54:58 AM

lol at SU hate.

SU's are awesome

1300super · November 11, 2011, 11:59:53 AM

I do agree SU's are awesome! Thats why Triumphs have them. Got to say though my twin strombergs have given me no trouble at all since I put the carb kits in them.

oldschool · November 11, 2011, 05:25:50 PM

I notice CD strombergs respond quicker, as they haven't got that heavy piston to lift like SU's have.
Poor old Jag had to take the SU's off their later E-Types and replace them with CD Strombergs to sell them in the USA, as the SU's couldn't meet emissions standards.

Paddy75 · November 14, 2011, 10:15:51 AM

Right so, the Stromberg CD3 is fitted. I had to use insulating tape to seal up the vacum advence at the SU has a bigger pipe on it, seems okay. The carbie I got had TC stamped on the inlet side flange and according to the Haynes the 1500 TC had a similar needle to the 1250, the carb I got was the only one I could find with the rod linkage so I was stuck for needle choice. The Stromberg CD3 I got with the linkage to suit the Hillman Avenger is apparently needled for a 1500cc.
Anyhow, as you guys say the throttle response is a bit more sharp but idle is a bit lumpy and I think its running a bit lean, the first impression was that when I lift the piston even slightly (at idle) the engine stalls, so to adjust the richness, ahh ffs! CD3, not CDS needs a tool to adjust through the oil damper. It will not start at cold without a bit of choke, so I'm thinking thats a good thing, and after started and if I knock the choke off it'll flat spot when I hit the pedal. Changed the air filter and gave it new plugs. I'll put a few miles on it to see what they (the plugs look like.)
I notice the car is not as quick as it was and when accelerating (when warm) a bit of choke seems to make the pull of the car more solid, running lean therefore, the exhaust too is not as hot at the tail-end. Mind you the fuel the worn out SU was giving it, that if the exhaust was a mile long it'd be hot! 5w40 diesel lube I've used in the damper.
Hey-ho after more ebay action (ordered a Stromberg adjusting tool) I'll get there. Turn the screw to richen, idle, lift the piston if it still stalls too soon then turn it some more. Then look at he plugs. I should compression test the clynders as there is a tick in the engine at fast idle that does not sound like a tappit, bearing in mind the engine while I have had the car was overheated (thank you smiths instrument cluster putting the temp gauge where you can't see it) that could be a broken ring. Oh well, onwards.

Paddy75 · November 20, 2011, 06:18:42 AM

OKAY! Stromberg go-go!
Got the new Stromberg carbie set up by an uncle-in-law of mine (diffrent guy from who I was on about before in this thread.) He had worked on and wrecked many Avengers back in the day.

I have never seen d'Avenger run so well, I am one happy customer! The idle is smooth, starts right on the button, no flat spots, no odd smelling exhaust fumes and sounding a good note, no shaking from the engine at fast idle and the car is pulling away at 20mph in top gear smoothly with no delay. Time will tell what the fuel consumption is doing and the car is pulling very nicely at light throttle so it should be good.
I've no doubt a SU in good repair would run pretty well just without the better throttle response on the Stromberg.
All is well that ends well.