Mad Mart

Thanks. For me, the next track day will probably be the Castle Combe Action Day on the 8th Sept.

I played with my new toy yesterday... Left hand side is the rear carb, right is the front. ...after a few adjustments... A view of the Megajolt software... The Sprint is running nicely & seems to accelerate really well. Can't wait for the next track day.

My Morgan Carbtune arrived today. :-)

I have just found these... http://www.airlinefittings.co.uk/airline-accessories/adapters-/-plugs-/-manifolds-brass/reducer-male/female-bsp-metric-wtih-o-ring-seal/thread-male-m7-x-1-thread-female-m5-x-0-8/prod_801.html ...they look as though they should work fine?

I take it you don't like these then Dave? These are the only type that came up when I did a search. I've now found the Morgan ones so will go for those. cheers.

I want to get a set of carb balancers for my Weber DCOEs 45/48. I have found these but the threads are M5, the Webers are M7. I'm sure I can get some thread reducers but I was mainly wondering if these will work OK with the Webers.

Has anyone got a spare auxilary venturi/choke retaining screw for DCOE 48s/45s. The 48s I have have a bodge on them so one of these will make them better.

I've booked for Silverstone. Hopefully doing CC and a few action days as well.

I was using something very similar on my Sprint until recently (now gone to Megajolt). It came from Sprintparts in Aus. so could very well be an identical part. I was using a Piranha leccy ignition module as a trigger. The ignition timing is a straight line curve. ie you set the ign. advance start, mid range & high revs. You can programme 2 different curves which can be swapped whilst the engine is running. It also has a rev limiter feature.

I was there, on the Triumph Dolomite Club stand. We got 2nd prize this year. 1st last year. ;D

It's ok, I've got some off fleabay.

They slip in Dave & have the special washers to hold them in place.

Has anyone got a set of 4x50mm. long trumpets/stub stacks/whatever you like to call them, for Weber 45s. I have a set of 60mm. if you want to swap. cheers, Martin

Yep, I heeded your advice, so I always take it in 4th now (well, 99% of the time). Only thing is I find I have started slipping the clutch as I come out of the corner as the car just doesn't want to accelerate as quick as I would like. No, it wasn't Robin. We went to have a look at the Sprint but the owner was nowhere to be seen. Now I know the track a bit better, I do tend to give it as much as I can. Those Yoko 032s just seem to get stickier the more laps you do. ;D It's all I use this Sprint for, it's a track day whore. ;D

I had a chat with the guy afterwards, he said he had an axle seal gone. By coincidence, when I went to change my wheels over at the end of the day, so did I. ;D Here's the re-match. I was after the MR2 (which I was gradually gaining on) but Mr. Jag had slowed up to wait for me to come round. <object width="425" height="344"><param name="movie" value=" ></param><param'> ></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src=" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>

More Action Day footage from Castle Combe earlier in the year...Got the camcorder mounted a bit more stable.

So what's your opinions of running without filters?

Name - The Track Sprint Type - Dolly Sprint Engine - 2000 BHP estimate - 165-170 Weight estimate - 900kg Carbs - Twin DCOE 45s Cam - Fast road cam Gear box - Std. Sprint Wheels - 13x6 Compomotive Suspension - Avo adjustable height/damping shocks. 400LB front springs. 200LB rears. Brakes - Front: Jon Jackson Vented Sierra conversion. Rear: STD. (load sensing valve removed) Other bits: Head Ported & Polished Vernier Cam Pulley Megajolt V.4 Davies Craig Electric Water Pump Kenlowe Electric Fan Facet Red Top Solid State Electric Fuel Pump Filter King Fuel Pressure Regulator Oil Cooler & Stat Limited Slip Differential with 4:1 final drive Stainless Steel Sports Exhaust Fully Polybushed Cobra Clubman Racing Seats Willans 3 point Safety Harness Goodridge Brake Hoses Solid Bottom Steering Coupling Bonnet Vents Mountney 13" Leather Steering Wheel De-Bumpered

All done, even got the rev counter working. Just need to get it MOTd so I can start fiddling.

Sorted! ;D Some dozy git had taken the wrong pin-out from the MJ. (oops) Brown = 5V White = Wiper Yellow = Earth I had to swap the yellow & brown leads as my pot is on the left of the carbs & turns anti-clockwise. All seems to be working now so just need to tidy up the installation & then set about tuning.

Thanks Nick, that's exactly the answer I was after. I shall give it another try tomorrow.

I spent a couple of hours tonight trying to get the TPS to work, but no joy. I thought this bit would be simples. I put a multimeter across 2 of the wires in turn & all 3 combos would raise & lower the needle as I turned the TPS, but between the yellow & white seemed to have the greater movement. I tried again with the ignition switched on & 5V coming from the Megajolt, but I seem to be getting 5V (or near enough) from any combo & rotating the TPS had no effect. When I tried to calibrate it using the software it would say something like '250 at closed and open throttle, make sure the wires are on the correct way', or if I turned the wires round '1 at closed and open throttle...etc.'.....I eventually gave up & thought I'd ask you guys for any ideas. One thing I have noticed is when I first switched the ignition on, the TPS gauge on the computer was waving around all over the place. Now it just sits at 100%.

On my track Sprint I've been running my 45 DCOEs with no filters at all, for the last few years, just 60mm. trumpets. Various people have commented that I should really have something to stop the crap getting into the carbs/cylinders. I tend to agree with them but it does sound nice without. ;D Anyway, I've bought a pair of second hand 80mm. deep K&Ns from fleabay. Question is, having 60mm. trumpets only leaves 20mm. max. from the front plate of the K&Ns. Will this cause a problem with air flow? Should I get some shorter trumpets?

Nothing wrong with the engine mounts, plenty of life left in them yet ;D

Success... Now to add the Megajolt unit.