omegod Posted February 10, 2021 Share Posted February 10, 2021 I predict a disappointing sub 200 initially then up to 242 with a fettle Low Horatio gearbox 1 Link to comment Share on other sites More sharing options...
The_Equalizer Posted February 10, 2021 Share Posted February 10, 2021 As an aside, do rather like the registration number. Link to comment Share on other sites More sharing options...
inconsistant Posted February 10, 2021 Share Posted February 10, 2021 Theres an interesting article on the history of AC cars here: https://driventowrite.com/2021/01/22/born-survivor-part-one-ac-ace-aceca-greyhound-cobra-428-invacar/ continued here: https://driventowrite.com/2021/01/27/born-survivor-part-two-ac-3000me-cobra/ Supernaut, JeeExEll and Saabnut 3 Link to comment Share on other sites More sharing options...
somewhatfoolish Posted February 10, 2021 Share Posted February 10, 2021 17 hours ago, Saabnut said: I will do a post on the history of the car later in the week. It was originally fitted with a brand new 357 but when Carroll Shelby drove it (I have a picture of him at the wheel) he insisted on a 427 and a 400 out of a 73 Chevelle was acquired and built to what it is. That presumably puts the ford nerdists in a tizwaz over a GM product displacing FoMoCo. Link to comment Share on other sites More sharing options...
Quintus Posted February 10, 2021 Share Posted February 10, 2021 I'll go for an entirely random 307. Link to comment Share on other sites More sharing options...
Saabnut Posted February 11, 2021 Author Share Posted February 11, 2021 It looks like it is all go for tomorrow A few friends are running a sweepstake on it so I will go with the same number I have there. 365bhp Low Horatio gearbox and somewhatfoolish 2 Link to comment Share on other sites More sharing options...
HMC Posted February 11, 2021 Share Posted February 11, 2021 Maybe also a BHP/tonne booby prize as well? Link to comment Share on other sites More sharing options...
SiC Posted February 11, 2021 Share Posted February 11, 2021 0bhp ...The clutch will fail again. 😬 Link to comment Share on other sites More sharing options...
Saabnut Posted February 12, 2021 Author Share Posted February 12, 2021 Set up and ready to start.... LightBulbFun, somewhatfoolish, spartacus and 5 others 8 Link to comment Share on other sites More sharing options...
dome Posted February 12, 2021 Share Posted February 12, 2021 I'm optimistic so will say a nice round 400bhp I'll swap the pint for a run around the block in this Link to comment Share on other sites More sharing options...
Saabnut Posted February 12, 2021 Author Share Posted February 12, 2021 First run completed, no figures yet (git!) but primary and secondary jet change underway spartacus, LightBulbFun, JeeExEll and 1 other 4 Link to comment Share on other sites More sharing options...
bezzabsa Posted February 12, 2021 Share Posted February 12, 2021 do we get to HEAR this?????? inconsistant, eddyramrod, Low Horatio gearbox and 1 other 4 Link to comment Share on other sites More sharing options...
spartacus Posted February 12, 2021 Share Posted February 12, 2021 I like seeing a car produce it's best on a dyno, there's an element of 'edge-of-the-seat' anticipation. Surely with a half decent cam that should be able to make 350bhp. Link to comment Share on other sites More sharing options...
Saabnut Posted February 12, 2021 Author Share Posted February 12, 2021 I have a video on a run but a) cannot figure how to get it off my phone and b) it is very muted due to the exhaust collectors. Anyway, the results are in. I am still awaiting confirmation of the weight but believed to be 1075kg. Very happy with the torque, a little disappointed with the power output. dome, Skizzer, JeeExEll and 2 others 5 Link to comment Share on other sites More sharing options...
Skizzer Posted February 12, 2021 Share Posted February 12, 2021 So I believe @Fumbler was closest (and I’m quietly smug about guessing within 2.5%). I’m sure you can get that up into the 300s with a little bit of fettling though 😊 Also 1 hour ago, bezzabsa said: do we get to HEAR this?????? this. Link to comment Share on other sites More sharing options...
spartacus Posted February 12, 2021 Share Posted February 12, 2021 That'll drive great with all that torque, I hope you've got good tyres! Link to comment Share on other sites More sharing options...
Saabnut Posted February 12, 2021 Author Share Posted February 12, 2021 A pint to @Fumbler and to show I am not a poor loser one for @Skizzer as well! Having thought about it, one of the priorities with this car is reliability as it will be making fairly regular trips between Aberdeen and Lemans (just under 2k miles round trip) and having a relatively unstressed engine should help with that. The torque should ensure a fun drive whilst retaining some semblance of control. There are only 2 tyres still made for the rear, BFG All terrains and Avon ZZR semi race tyres. The last set (9 years ago) cost £1200 trade, and they will need changing at the end of this year. They are superb tyres though. Fumbler, The Moog, Skizzer and 3 others 4 2 Link to comment Share on other sites More sharing options...
JeeExEll Posted February 12, 2021 Share Posted February 12, 2021 Look at the torques, for a 1100kg car. PMSL. Happy times ahead. Skizzer 1 Link to comment Share on other sites More sharing options...
SiC Posted February 12, 2021 Share Posted February 12, 2021 260bhp per tonne is pretty respectable. More than a modern Golf R, a A45 AMG or even a Mustang GT V8. They'd have to be in the bigger engined Dodge Challenger to get close. Skizzer 1 Link to comment Share on other sites More sharing options...
hairnet Posted February 12, 2021 Share Posted February 12, 2021 explain why the tyres are insane? how 11's do ya get when ya gas it? Link to comment Share on other sites More sharing options...
hairnet Posted February 12, 2021 Share Posted February 12, 2021 if you dont understand youll never get it Link to comment Share on other sites More sharing options...
Skizzer Posted February 12, 2021 Share Posted February 12, 2021 35 minutes ago, JeeExEll said: Look at the torques, for a 1100kg car. PMSL. Happy times ahead. This. Torque is much more fun than power and you’ve got literally truckloads of it. What a fabulous device in every way 😁 1 hour ago, Saabnut said: and to show I am not a poor loser one for @Skizzer as well! Ha! Cheers! I’ll be glad to get a round in too when such things are allowed again. Link to comment Share on other sites More sharing options...
somewhatfoolish Posted February 12, 2021 Share Posted February 12, 2021 2 hours ago, Saabnut said: I have a video on a run but a) cannot figure how to get it off my phone and b) it is very muted due to the exhaust collectors. Anyway, the results are in. I am still awaiting confirmation of the weight but believed to be 1075kg. Very happy with the torque, a little disappointed with the power output. I R disapoint. Still, as you say it should be docile and civilised to drive with curves like that; there's some constriction in there as it gives up at 3700 and starts twiddling its thumbs. Link to comment Share on other sites More sharing options...
Saabnut Posted February 12, 2021 Author Share Posted February 12, 2021 Just spoken to my friend who took it down. First he reminded me that it was wheel HP so add 20-30% ??? for transmission losses. The printout shows losses as 19HP but I am unsure of what these things mean. He said that to increase HP we would reduce Torque, especially at low revs. He said it drives superbly and would not change a thing! Coming home at 85mph it was sat at 1800 rpm and just lolloped along! @hairnetthe tyres are super sticky, the last attempted 11 (on the Mulsanne straight) destroyed the clutch...... When lockdown ends I can go and fetch it..... The printout: LightBulbFun, DSdriver, somewhatfoolish and 2 others 5 Link to comment Share on other sites More sharing options...
Asimo Posted February 12, 2021 Share Posted February 12, 2021 What size are the rear tyres? Just curious, having once run a car for which rear tyres were just no longer available (255/45 -15). Link to comment Share on other sites More sharing options...
Saabnut Posted February 12, 2021 Author Share Posted February 12, 2021 2 minutes ago, Asimo said: What size are the rear tyres? Just curious, having once run a car for which rear tyres were just no longer available (255/45 -15). I cannot be sure but memory tells me 285/50-15 - the only reason they are still available is they were fitted to early 60s Corvettes, hence race tyres being the default. Link to comment Share on other sites More sharing options...
hairnet Posted February 12, 2021 Share Posted February 12, 2021 where did the plate come from? how blunt would the performance if me and @beko1987 sat in it be? :D Link to comment Share on other sites More sharing options...
SiC Posted February 12, 2021 Share Posted February 12, 2021 1 hour ago, Saabnut said: He said that to increase HP we would reduce Torque, especially at low revs. You might already know this but: BHP = Torque * RPM / 5252 A lot of low down torque that eases off with revs will give a max bhp that appears disappointing. Modern engines with turbos and fuel injection can give a flat torque curve, so give good bhp and still low down performance. Low down torque is the head snapping umpfh and responsive feel that people likes. Link to comment Share on other sites More sharing options...
bezzabsa Posted February 12, 2021 Share Posted February 12, 2021 Tow anything.................hmmmmm cobra with full on Transit and Dag lovers 'van on the back.....LOL Link to comment Share on other sites More sharing options...
Shandylegs Posted February 12, 2021 Share Posted February 12, 2021 Looking at the first graph the house looks to have been already adjusted* to flywheel figures? Must admit to also having been disappointed with the figures produced, I would have been expecting somewhere around 400 flywheel figure? Link to comment Share on other sites More sharing options...
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