I have a 202 with the stromberg carby on it. On the base of the carby the throttle shaft leaks a small amount of fuel and therefore is sucking air under suction. the engine doesnt like to idle very well and is not good at low revs. High revs are ok though.
I got quoted $70 to have the base redrilled and rebushed with an oversize throttle shaft. but cant be done for a couple of weeks
I do have a ww stromberg off a 253 in good condition would that be a better way of going? I would need an adapter to the manifold
I have also looked for a replacement stromberg carby/base but cant get one locally
could I just rebush the base maybe keeping the original shaft?
The WW Stromberg should bolt straight on to the Holden 186S type two barrel manifold without an adaptor if you can find a 186S manifold.
Usually a few of them on Evilbay.
Or just ring around some carby rebuild places, I think there is some listed in one of the "sticky" sections on the forum under parts and services or something like that and you should nearly be able to get a carby base already rebushed on an exchange service that makes it quicker for you.
A WW 2 barrel Stromberg to a standard 202 manifold would require an adaptor ( if there is one available that is ?? ).Try REDLINE or LYNX ENGINEERING ( if they are still in business ??).
However, because the single barrel manifold has a smallish carby/manifold opening compared to the larger WW Stromberg, there may not be a great advantage gained by the bigger carb fitment at higher revs because the opening port size restriction is the defining factor in the amount of airflow possible.
Better still,
If you can get hold of a 186S Holden manifold the WW Stromberg will bolt up to it as is because the manifold is made for the WW Stromberg fitment.
No adaptor is necessary to fit this but linkage modifcation or cable fitment may be necessary.
The 186S manifold will also bolt up to the 202 head as is because they are also made for this head fitment.
Last edited by FB MAD on Tue Aug 18, 2009 12:17 am, edited 1 time in total.
but i have found some manifolds on ebay to take the WW stromberg the 186s manifold
I aready have a accelerator cable set up so wont have too many probs with the change over
and I ll give some places a call to see about an exchange for my base
I also already have a carby kit to rebuild the single barrel so if i can get an exchange ill rebuild the single barrel
Ill go with the cheaper way I reckon
Will there be much of a difference in power with the WW
There will be some improvement especially with the 186S type 2 barrel manifold even on a stock engine.There may be some added fuel consumption but the extra power has to be found somewhere and that is by using more fuel to do it.
The WW Stromberg is a good little carby and is reasonably economical compared to some other performance carbys.
In theory a WW Strommie from a 253 may be jetted a bit too big for a 202 but the difference in 253 and 202 engine capacity isn't a great deal so it should still work OK on a 202 even though it's tuned for a 253.
FB MAD wrote:the difference in 253 and 202 engine capacity isn't a great deal so it should still work OK on a 202 even though it's tuned for a 253.
thats what I was thinking theres not tooo much of a difference
I reckon im leaning more towards the WW now
not too worried about fuel consumption and wouldnt mind a bit more power
I'm late to give you some info....again.... no novel..
- and may very well be of no use to your issue....
I have a 186 "S" manifolds - the "headers" I intended to fit to my 179 HP - and would have done so but for one thing......
I intended to use the original standard 186 water heated inlet manifold.... with the 186 "S" headers - they will not fit as a "package"..... the jacket of the inlet manifold will not permit the headers to fit........they are fouled by the water jacket corners.....
I expect you have extractors fitted to the 202? - I would suggest checking that the two manifold you intend to use fit......
Terry would have warned you if this was not the case - and I may very well be creating doubt by suggesting you just make some checks......
Yes, the throttle body can be re-conditioned..... I'd also check with Burson's if they in fact retail a new throttle body - they have a lot of (now) early Holden parts on their books....... imported .... not quite "oh - what a feeling"..... but it will not make one jot of difference to the outcome.......
I would also expect Rare's to do likewise - possibly from the same o'seas factory......
I havnt yet got a 186s manifold but im still searching
just to clarify the water jacket that is fouling the headers is that the section of the manifold under the manifold below the carby closest to the block?
My 202 does have extractors and if the section you are refering to is the section im thinking then my currant manifold does have the water jackets and there is only just the clearence for the manifold and extractors so idealy the 186s manifold should hopefully fit
I couldnt find any replacements on rares site
Also the carby place in sydney quoted $35 - $40 to redrill and fit an oversized throttle shaft he said it would take them about half an hour. next time im in sydney I will be getting that done to my single barel stromy
Hi Scubbs - I am of the opinion that the inlet manifolds were altered somewhere after HR/K/T/G to somewhere in HQ - if yours is a 202 inlet manifold, I probably shouldn't speak out of turn - I am not familiar with it.
I have seen Holden alloy inlet manifolds which have a water pipe at the front and also the rear...... they may also be Torana.....
The "issue" I have with mine - is that the standard water heated inlet manifold from a 186 has the two water pipes at the front and the heating jacket is almost square edged and rectangular - it does have an angled lower front and rear on this rectangle - and this is where it fouls the 186-S headers.
My concern was that you may have purchased a 186-S inlet manifold and found that your existing exhaust manifold would not let it be fitted.... if you have extractors - I would imagine the issue would not arise - I have noted that most red motor extractors fall away and down quite rapidly once they leave the head ports........
The throttle body shaft wear issue is one which sooner or later affects all of our standard carby engines - there isn't any way to completely eliminate it, but keeping the surrounding area relatively clean and not placing too much load any the throttle rod connections which load teh throttle body shaft( heavy springs etc.) can slow the wearing process down some. I do not refer to the spring which merely pulls the rod on the firewall back.... some people fit springs to the air horn screws and have them pulling on the throttle body arm.......
You will probably only ever have to have this reconditioned once - my "second" one is still in faithful service.......
Terry has given you very good advice on increasing the intake and it's resulting effects....... I'm "old school" I'm afraid and like to keep the General's original "system" for each motor almost intact......
I scored an LC 186s carb and manifold $40.
Ill put a kit through it tomorrow and see how it goes
At the swap meet today looking for carbs. So many of them had play in the throttle shaft. The one I got had the least amount of play and was the cheapest and it came with another 186s manifold now I got 2 so I was happy about that.
Idealy there should be almost no play is that right?
I would need an adapter to the manifold
There will be some improvement especially with the 186S type 2 barrel manifold even on a stock engine.There may be some added fuel consumption but the extra power has to be found somewhere and that is by using more fuel to do it.
