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Post by 1800heap on Oct 23, 2017 0:21:07 GMT
Hi Andrew
Hope you don't mind me asking but what sort of cost is involved in a dyno session for your crab?
Nick
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Post by andrewa on Oct 29, 2017 12:58:38 GMT
Hi - just back from rally - had a great time and no issues with car - covered just over 2500 miles in five days chasing up and down the French/German border.
Having two maps on the distributor was very useful as 98 ron not always easy to find and it worked a treat. 700 miles on the way back in just over ten hours including fuel stops - all on Autoroutes. Used no water and about 1/2 a litre of oil over the whole trip.
Re - rolling roads - it depends on how far you want to go. In my experience they all charge by the hour or part thereof (some). The full treatment - taking the carbs partially apart to make sure everything is spot on, plumbing in a fuel pressure monitor, checking timing, tappets and so on and then getting started can take some time. Most (in my experience) then tend to spend some time getting fuelling spot on which can take more time (needles/springs/float heights etc etc) and then getting the timing dialled in. As you can appreciate there's an element of going round and round until you've got the optimum. I keep mentioning the word time a lot and that's what costs. The short answer is - again in my experience - is £100 to £120 for about two hours + parts for which you will get most of the above. But it depends what they find really. There are some bandits out there - a friend of mine was charged £350 for the above by someone and the car was no better afterwards! You need to make sure the car is running well and is healthy and you happy for the engine to be worked hard.
Cheers
Andrew
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Post by dave1800 on Oct 30, 2017 0:22:47 GMT
Well done Andrew, that's some hard driving over 5 days you must be quite exhausted even if the car isn't.  Some good advice on the rolling road costs thanks. Peter Burgess has a section in his book devoted to the preparation before you should entertain a rolling road tune up. Basically the engine must be in good condition with even compression and special attention needs to be given to the health of the cooling system components as they will be highly stressed. Any air leaks, carb needles, jets float chambers etc will be far cheaper to replace before the test. Finding a good rolling road operator with experience of the BMC B series engine and the SU is essential so you need to research feedback. My personal view is that unless you fit a programmable ignition you will not be able to extract the maximum benefit, but that does add at least £200 to the cost. David |
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Post by dave1800 on Oct 30, 2017 0:23:42 GMT
Well done Andrew, that's some hard driving over 5 days you must be quite exhausted even if the car isn't. Some good advice on the rolling road costs thanks. Peter Burgess has a section in his book devoted to the preparation before you should entertain a rolling road tune up. Basically the engine must be in good condition with even compression and special attention needs to be given to the health of the cooling system components as they will be highly stressed. Any air leaks, carb needles, jets, float chambers etc will be far cheaper to replace before the test. Finding a good rolling road operator with experience of the BMC B series engine and the SU is essential so you need to research feedback. My personal view is that unless you fit a programmable ignition you will not be able to extract the maximum benefit, but that does add at least £200 to the cost. David |
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Post by 1800heap on Oct 31, 2017 7:11:56 GMT
Thanks for the dyno info Andrew.
Did you take plenty of dashcam video of your trip? You know we are all keen to see some! I am anyway. The more I see of everybody's exploits on here the more enthusiastic I get about finishing my car, so keep up the good work!
Nick
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Post by dave1800 on Oct 31, 2017 11:22:27 GMT
Andrew, I enjoy your videos too even without the music David |
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Post by andrewa on Nov 1, 2017 9:39:53 GMT
The rally was more foggy/misty/rainy than last year so didn't bother and to be honest the scenery looked similar to last year! Sorry - but can offer you this by way of compensation! www.tonylarge.net/november-sun-run-2017-photos-cars-40-to-49See page 17 onwards. I have track day in early December so will take it on that if they will let me. It wasn't that tiring as car comfortable and on long stretches we changed over every few hours. I think my longest solo was Darwin to Alice Springs in one go - before the speed limits on the 2004 London to Sydney - but different car a 5 litre BMW X5 - but that's another story. Cheers Andrew |
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Post by andrewa on Dec 8, 2017 17:11:13 GMT
At Goodwood today for charity track day. Great time and car ran well - but alas older cars are becoming rarer at these things - apart from a Hillman Imp racer (which owner said would rev to 9,000 rpm) there was nothing to benchmark myself against. Obviously I was left for dead on the straights by modded moderns (the Austin will eventually haul herself to an indicated 110 mph but it takes a while) but the old girl held her own in the corners. As always - many nice comments, but an extra 100 hp would have been handy ... Apologies..it does go on a bit - seemed to have lost the ability to edit... |
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Post by dave1800 on Dec 9, 2017 6:19:06 GMT
Sounds sweet and very smooth. Now how about swopping the engine for a Tesla motor, that would be different and give you your extra 100bhp. There are some VWs Beetles etc being converted. Maybe viable when there are accident damaged electric vehicles available.
What was the issue with the brakes?
regards
David
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Post by 1800heap on Dec 9, 2017 7:32:44 GMT
Great job Andrew. Looks like the old girl was flying round! Supercharger mod perhaps for some extra horses! How do you find the gearing? What is the rpm at 110 sounds reasonable in the video. It is certainly nice and quiet!
Nick
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Post by andrewa on Dec 9, 2017 12:48:33 GMT
Brakes were just a sluggish servo that sorted it self out after a while!
Not sure of the rpm as tacho is on parcel shelf and I was looking out of the front window.
With the 270 cam - great for road - it's all over by about 5,200 rpm whereas with the 285 it moved everything up about 800/1000 rpm.
You can't have everything I guess but on these rare occasions I miss that extra oomph higher up - don't think it would have helped me catch the GTR or the Carrera though!
Always been a fan of blowers but am not sure this is the car to invest more money in - it's pretty well developed as it is.
We shall see though!
Cheers
Andrew
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Post by dave1800 on Dec 11, 2017 0:51:09 GMT
Perhaps Nick's (1800heap)VVT project may provide the answer by moving the maximum torque up by 500-800 rpm whilst retaining the low end. David - it's all over by about 5,200 rpm whereas with the 285 it moved everything up about 800/1000 rpm. Andrew |
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Post by 1800heap on Dec 11, 2017 9:13:14 GMT
Hopefully I will be able to spend a bit of time on the VVT over the Christmas holidays. Rest assured gentleman I will probably have to pick both your brains when (and if) I get a bit closer to a working unit!
Sadly it won't be as effective as modern VVT as you will still be stuck with the cams exhaust to inlet timing but as David said hopefully it will stretch the power band a bit!!
I am very keen now to have a working car after seeing your video Andrew! Track days look like good fun. Perhaps you may get some interested crab drivers take up your offer, now they have seen the action!!
The nearest I have been is on a racing bike round Brands Hatch and I was too worried about falling off to go very fast!
Nick
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Post by andrewa on Dec 11, 2017 17:47:25 GMT
I'm into my bikes as well but mostly '70's stuff - have had a few moderns but a bit like cars the fun for me is playing around near the limit. For my limited abilities the limits on moderns are so high that when you get near them, if something goes wrong you're travelling at such a pace it's goodnight Vienna. I remember James Hunt saying that the most fun he had driving a car was his old A35 van round a roundabout in the wet at 30 mph - I think I'm in that camp!
Cheers
Andrew
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Post by dave1800 on Dec 12, 2017 1:19:55 GMT
Me too! My first car, a Morris Minor on half worn cross plies would be on opposite lock at 25mph on roundabouts in the wet, great fun! Most drivers don't get the opportunity to learn these driving skills at safe speeds nowadays. David I remember James Hunt saying that the most fun he had driving a car was his old A35 van round a roundabout in the wet at 30 mph - I think I'm in that camp! Cheers Andrew |
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