bluelighttaxidriver Posted May 25, 2014 Share Posted May 25, 2014 Am I correct in thinking that standard HS6 dash pots don't fit under a gt6 bonnet..?Relative has found a complete pair in his garage, with manifolds, & I would like to use them. If they don't fit, how easy is it to get stubby pots...?Many thanks. Quote Link to comment Share on other sites More sharing options...
Tim Bancroft Posted May 25, 2014 Share Posted May 25, 2014 You are correct.Dolomite Sprint HS6s are the ones you need.I'd talk to Andrew Turner and see if he can help you. Quote Link to comment Share on other sites More sharing options...
bluelighttaxidriver Posted May 25, 2014 Author Share Posted May 25, 2014 Ok thanks. So is it a case of the whole carbs are unsuitable, or can I just change the pots?Not affecting me financially either way, as I'm not paying for them. Will just say no thanks if they're totally wrong... Quote Link to comment Share on other sites More sharing options...
Clive Posted May 25, 2014 Share Posted May 25, 2014 it is th e dashpot/piston/damper that are matched sets.Nobody is likely to sell just those as a seperate item, well not at a price where it would be viable.Better get a complete set. Quote Link to comment Share on other sites More sharing options...
Tim Bancroft Posted May 25, 2014 Share Posted May 25, 2014 8730 wrote:Ok thanks. So is it a case of the whole carbs are unsuitable, or can I just change the pots?Not affecting me financially either way, as I'm not paying for them. Will just say no thanks if they're totally wrong...Someone will have them off you, Andrew buys old carbs, so don't throw them away. Quote Link to comment Share on other sites More sharing options...
bluelighttaxidriver Posted May 25, 2014 Author Share Posted May 25, 2014 Ok thanks. Only experience is with SU's, but will have to get to grips with Strombergs...! Quote Link to comment Share on other sites More sharing options...
Gt6s Posted May 25, 2014 Share Posted May 25, 2014 You can shorten the dashpot ( only the front carb needs doing ) enough to clear the bonnet don't forget the inner damper tube and piston rod need cutting by the same amount. This is the way I did it on my Sixfire.Laurence Quote Link to comment Share on other sites More sharing options...
bluelighttaxidriver Posted May 25, 2014 Author Share Posted May 25, 2014 Gt6s wrote:You can shorten the dashpot ( only the front carb needs doing ) enough to clear the bonnet don't forget the inner damper tube and piston rod need cutting by the same amount. This is the way I did it on my Sixfire.LaurenceInteresting..... ;) Quote Link to comment Share on other sites More sharing options...
stevegt6 Posted May 25, 2014 Share Posted May 25, 2014 On my GT6 mk3 which i have got HS6's with DS dashpots the front one is still uber tight under bonnet - i have circa 1/4 inch clear stationary with engine as low as can go and bonnet highest front locstion.... also spitfire throttle cable and simple bracket off inlet manifold on mine.They doo look good though 8)1.75 Stroms are another option from something like a TR4 (think they are slightly shorter than later cars..???) Quote Link to comment Share on other sites More sharing options...
Martins Stag Posted May 26, 2014 Share Posted May 26, 2014 I have a pair of HS6's on my 2.5 Spitfire with, as Clive suggest Dolly Sprint Dashpot. Works a dream and the carbs have been mega reliable and give out reasonable power (130 BHP) and reasonable economy low 30's is possible with a light foot.Would recomend themMartin Quote Link to comment Share on other sites More sharing options...
BrendanD Posted May 26, 2014 Share Posted May 26, 2014 I have HS4 experience on the Spit 1500, and Strom 150s on my GT6. Both sets of carbs were rebuilt by me (and in the case of the SUs, several times over 10 years).When set up properly, the Strombergs are every bit as reliable as the SUs, and deliver a nice 3.5% CO at idle and 5.5% flat out @100bhp on my stock 2 Litre six.The SUs on the spitfire however intermittently decide to spit petrol out of the float chambers, despite all my efforts over the years (new lines, tank seal, flushing ++++, filters, every type of needle valve and float known to man (currently ethanol resistant floats and viton tipped valves). Give me Strombergs any day.....- The Stromberg's achilles heel is the choke disc. Once that wears you can never get the mixture right, and a NOS one or swap from a better carb is the only cure. Even the 'O' ring on the needle adjustment can be changed with care, and the rubber seals on the spindles are a much better solution than the SU.- SUs are an agricultural design by comparison, and the spindles run directly in the soft metal body. Any more than slight wear on the brass spindle will wreck the body and its off for a rebushing in a machine shop (I would source a new carb in preference). The wax stats and poppet valves need to be got rid of as a matter of course.SUs allow a simple needle swap on a 1500 for breathing upgrades (AAT/AAQ), but if you're fitting to a 6 you'll need a rolling road anyway, and they can and will profile the existing needles anyway. Quote Link to comment Share on other sites More sharing options...
rotoflex Posted May 26, 2014 Share Posted May 26, 2014 BrendanD wrote:Give me Strombergs any day.....Hear, hear! Another in favor of Strombergs. Tastes differ, but from my dealings with them both, I prefer the Strombergs. Not the least because the fuel bowl is more closely integrated with he carb body, making them less of an articulated beast to deal with. Quote Link to comment Share on other sites More sharing options...
MarkB Posted May 28, 2014 Share Posted May 28, 2014 Hs4 carbs worked very well on my 2 lite Vitesse unless you are installing a different cam and head work you can get great performance with standard or tweaked HS4s all about air speed bigger not always better. Quote Link to comment Share on other sites More sharing options...
bluelighttaxidriver Posted May 28, 2014 Author Share Posted May 28, 2014 Got the carbs today. Very dusty but appear intact. Manifold too.. :-)Leaning towards staying with the strombergs (I change my mind alot..!)Seems to be favour for hs4's though.... Quote Link to comment Share on other sites More sharing options...
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