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Old 11 Mar 2020, 12:20 (Ref:3963057)   #2626
zefarelly
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
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Old gearboxes. It's counter intuitive but you really need to feed the change slowly (gently) especially when going from third to second. That said, my old Capri box was pretty robust, can't say the same for the MGB or the LT77 gearboxes.
Ford boxes are better than most, we both know. In the Crustina I always go from 4-3-2, and say @ the bus stop 1st . . . . 4-2 is difficult to execute smoothly at high revs, lots of people snatch reverse trying.
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Old 11 Mar 2020, 12:23 (Ref:3963059)   #2627
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
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Well, well, well, keep me posted.

On the top mounts and axle location, we have documentation and we made it available to scrutineers. Now it's up to people to check.
Good to know my efforts haven'y gone to waste
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Old 13 Mar 2020, 15:53 (Ref:3963915)   #2628
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Peter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of FamePeter Mallett will be entering the Motorsport Hall of Fame
[Mod]Guitar and other stringy subjects sent to Delta's Twentee break.[/Mod]
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In the current circumstances, we need to do all we can to help local businesses. With this in mind I suggest we all schedule our visits to the pub so we can keep the 2m social distancing and whilst there get completely slamied for two hours before handing over to the next shift.

It probably won't stop the virus but nobody would care.
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Old 13 Mar 2020, 16:00 (Ref:3963918)   #2629
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grantp should be qualifying in the top 3 on the gridgrantp should be qualifying in the top 3 on the gridgrantp should be qualifying in the top 3 on the grid
Just wondering if this should now include Summer Projects or does that deserve a separate thread?

Can't imagine that the current officially promoted panic and the soon to be "rushed" through (never a good sign) legal regulations in the UK will not come up with some utterly hopeless rules that effectively shut down everything.
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Old 14 Mar 2020, 06:27 (Ref:3964105)   #2630
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Gerard C should be qualifying in the top 10 on the grid
Do you think I could find a very good specialist to refurbish a Mazda maf/ débitmètre ? Must be fully compliant to the strict regulation after that…
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Old 14 Mar 2020, 12:38 (Ref:3964177)   #2631
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E.B has a real shot at the championship!E.B has a real shot at the championship!E.B has a real shot at the championship!E.B has a real shot at the championship!E.B has a real shot at the championship!
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Do you think I could find a very good specialist to refurbish a Mazda maf/ débitmètre ? Must be fully compliant to the strict regulation after that…
Hehehe I have heard Ferrari F1 are pretty handy with getting good results from their flow meters.
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Old 14 Mar 2020, 13:33 (Ref:3964183)   #2632
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Yes but in the Miata case its not an italian job we need!
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Old 15 Mar 2020, 10:16 (Ref:3964311)   #2633
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
One of my little winter projects was modifying a 225 Lambretta cylinder with a boost port and piston window, then adding a reed block to the induction. also a 62 stroke 110mmm rod crank so 238cc, a packing plate under the cylinder to get the port timing and squish right . . . . add a 28mm Dellorto and big bore exhaust. changed the drive sprockets from 15/46 to 17/47 to get 4.7 overall ratio ( so 72mph @7000 rpm.) and fitted a 5 plate composite clutch.
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Old 15 Mar 2020, 11:47 (Ref:3964327)   #2634
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Nice way to check the squish, may be better than modeling clay. Together with the reed valve, the boost port will give both torque and power and will probably make the engine more user friendly. I guess its impossible to adapt a mobile exhaust valve like the ones we had on the Yam' RDLCs. At 70 more mph, all you need are… bullet proof pants! Eeer, what about the braking system? Tail parachute may be…
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Old 15 Mar 2020, 14:58 (Ref:3964346)   #2635
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
Hydraulic disc brake on the front like this. . . .
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Old 15 Mar 2020, 15:22 (Ref:3964348)   #2636
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Nice! Does you Dell'Orto have a power jet? All the front end is home made I guess.
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Old 15 Mar 2020, 17:05 (Ref:3964367)   #2637
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One of my little winter projects was modifying a 225 Lambretta cylinder with a boost port and piston window, then adding a reed block to the induction. also a 62 stroke 110mmm rod crank so 238cc, a packing plate under the cylinder to get the port timing and squish right . . . . add a 28mm Dellorto and big bore exhaust. changed the drive sprockets from 15/46 to 17/47 to get 4.7 overall ratio ( so 72mph @7000 rpm.) and fitted a 5 plate composite clutch.

Two Stroke engine tuning .
Takes me back to when I was a boy . Raced gearbox class Karts on the big circuits . Did all my own tuning .
Found a technical paper by Narmuru & Niteo ? Sp , who were race engineers at Yamaha . Very complicated , required logarithms to work out port timings etc .
But it did work , built an engine using their calculations & was quite successful
with wins & lap records at Lydden , Brands , several other circuits and was overall champion at Cadwell park one year .
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Old 16 Mar 2020, 07:58 (Ref:3964454)   #2638
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
Historic kat racing is probably just about affordable!

The LAmbretta engine is piston ported, so pretty simple and a very well trodden path . . . we all did silly experiments when we were kids, now its all sensible compromise for ridability, and some sort of fuel economy.

Even the hydraulic disc conversions are off the shelf now. THe Italians have some bonkers race bikes, double front disc and 60 BHP!

20ish is plenty enough for touring and 50+ MPG
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Old 10 Apr 2020, 11:18 (Ref:3969759)   #2639
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What do you think about using Loctite 3020 with Cometic head gaskets, V6 engine, bloc and heads being cast iron? Stupid or not? Other sealant to recommend?
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Old 10 Apr 2020, 15:50 (Ref:3969816)   #2640
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Historic kat racing is probably just about affordable!
Don’t think my old cat is up to being raced. RSPCA may object, too!
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