soundrediscovery Posted April 29, 2015 Report Share Posted April 29, 2015 Yes or No is the question really..... As I will have to refurbish the Solex carbs and all of the rubber hoses and the connections to the air box, I wonder if it may just be simpler (I like simple) and lower long term maintenance to change. I think I read somewhere that it is a straight swap, and by coincidence I have a pair of Strombergs in the boot with pancake filters. Any thoughts or opinions would be welcomed. Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 29, 2015 Report Share Posted April 29, 2015 the easy way is to fiit a mk1 2 ltr manifold and a pair of good CD150 strombergs this alone will raise the \BHp from 70 to around 82 needle 7B mine was converted way back and proves a worthwhile change. pancakes best avoided you wont get a stromberg needle to make the mixture correct, keep the std air box and paper filters. 1600 uses a CD150 but must have NO internal damper spring but must have the heavy weight damper ring some limited spec is shown on the burlen site http://zenithcarb.co.uk/carbspec/carburettor/spares/id/4010/ Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 29, 2015 Report Share Posted April 29, 2015 photo of my 64 1600 + strombergs Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 29, 2015 Report Share Posted April 29, 2015 the intake tubes were changed later for 1.5" sink waste , far less restictive 1 Link to comment Share on other sites More sharing options...
Rangie4fun Posted May 3, 2015 Report Share Posted May 3, 2015 New to forum but this year a Spitfire MK3 driver for 25 years Now a friend asked me to look at his Spitfire which has fitted a 1600 Vitesse engine with twin Stromberg 125. He says that from 4000RPM there's no real grunt from the engine.The car stood for some 7 years and I had to clean out the carburettors. I saw the diameter of the carb outlet is smaller then the inlet manifold. Could it be that there is a manfold fitted that can hold Stromberg 150? I was triggered by the photo that was attached by Pete, and this manifold looks the same as on this Spitfire. Joep Link to comment Share on other sites More sharing options...
Clive Posted May 3, 2015 Report Share Posted May 3, 2015 Quite possibly, and also worth checking the needle spec. People had/ have a habit of fitting whatever they find that bolts on, rather than what is correct! Link to comment Share on other sites More sharing options...
Pete Lewis Posted May 3, 2015 Report Share Posted May 3, 2015 there were some after market kits around with a variety of manifolds and adaptors to take CD125's to replace the strangled solex's the factory fitted the mk1 2ltr manifold and CD150 as OE std in later 1600 life never the 125 on a 1600 its easy to make up an link to continue with the rod throttle and simple brackets to keep the early header tank. also you need the later coolant bypass tube , not on mine as the 6-3-1 gets in the way , so this was bypassed with a hose . after much messing around with needles and springs the std basic spec was best even with the extractor and ram stacks inside the orig paper filters which need some surgery to make them fit . Pete Link to comment Share on other sites More sharing options...
Rangie4fun Posted May 4, 2015 Report Share Posted May 4, 2015 Thanks for your replies! Going to check needles and report back. There are also K&N filters fitted. From my own experience (Spitfire) I know that these require richer needles than the standard ones. Do you think it's best to put back original paper filter? Is there a part number stamped on the manifold? Can someone tell me what number it is for a CD150 and for a CD125 setup? Link to comment Share on other sites More sharing options...
Pete Lewis Posted May 4, 2015 Report Share Posted May 4, 2015 measure the carb portholes 150 = 1.5" 125 = 1.25" we tried pancakes and there was a thought to use 13/60 needles but it was hopeless stick to the std filter and std needles and damper weight was the best we ever achieved even with the 631 tried 2ltr needles and a variety of springs but all too rich any filter away from the std paper element will struggle to find a needle to suit , there's not the range available and pancakes make for noisy induction , when you want a crisp exhaust , to put a smile on. Pete Link to comment Share on other sites More sharing options...
Rangie4fun Posted May 4, 2015 Report Share Posted May 4, 2015 The portholes are 1.5" . So conclusion is that there's mounted a CD150 manifold equipped with CD 125 carbs. Not the best combination I guess? In a few days I might get the rest of the car ready for a test drive. Will report back on that. Link to comment Share on other sites More sharing options...
Pete Lewis Posted May 5, 2015 Report Share Posted May 5, 2015 factory figures the 150 raise the 70bhp solex to 82 bhp, on CD150 I have no idea what 125 would do but as similar to the solex doubt they have the desired improvement Pete Link to comment Share on other sites More sharing options...
soundrediscovery Posted May 15, 2015 Author Report Share Posted May 15, 2015 Appreciate all the advice on this as Pete's increase in BHP is immediately interesting. So I guess the next Q is whether or not the same manifold and set up was across all the 2 litre 6 cylinder Triumphs as pricing of second hand manifolds with Strombergs varies greatly. I am in no particular rush to make the switch as the recent major service has greatly improved running (albeit the fuel gauge shows empty when it is full and vice versa ) - it is a case of deciding what my priorities are and whether I want to move away from something which at the moment is 95% original..... Link to comment Share on other sites More sharing options...
Pete Lewis Posted May 15, 2015 Report Share Posted May 15, 2015 The late 1600 with the twin cd150 uses exaclty the same manifold as the mk1 2ltr pete Link to comment Share on other sites More sharing options...
soundrediscovery Posted August 19, 2015 Author Report Share Posted August 19, 2015 the intake tubes were changed later for 1.5" sink waste , far less restrictive Is that a brake servo I see in the background? Link to comment Share on other sites More sharing options...
soundrediscovery Posted August 19, 2015 Author Report Share Posted August 19, 2015 photo of my 64 1600 + strombergs Pete sorry on this one..... Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 19, 2015 Report Share Posted August 19, 2015 This 64 1600 had many triumph upgrades, she's shown on the club face book page advertising show cars, yes before we knew were to fix one decided to shortennthe battery tray and move it left , to fit the servo in the real place is left to right a cross top of clutch cyl this servo fed type 16 calipers and mintex 1144 pads ,,, stops on a sixpence she had 631 pheonix collectors 2"exhaust , single club semi sports for 1600/herald sounds awsome crisp and on song, not a dull droning bark. the ram pipes were a bit of a bodge inside the filters but made a improvement the list of upgrades was pretty endless...why did I sell her !!!!!!! We really needed 4 doors for a load of old cogders and a bigger boot for me slippers pete 1 Link to comment Share on other sites More sharing options...
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