Could a T4 engine stand being asked to output 200BHP? Surely something somewhere would give, the tolerances aren't like a modern engine, they're a bit agricultural.
What's pathetic? Your lack of reply? Maybe nobody who's read the thread knows. I don't, but if a guess is any use, I'll guess yes. Hard for power crazed drag racing busist to resist some extra oomph.
Doesn't Maddog use nitros on his USB bus, Im sure Ive seen vids of him purging his NOS prior to warming his tyre - Alex will be able to tell us!
Absolutely - people should always reply to my posts, simply because they are by me and I'm *****ing brilliant at everything me. Actually, I was hoping to join the debate, being genuinely shocked that the greatest engine every designed and built by mortal man should, shock horror, need to be modified in any way.
Though it's quicker to throw it away and replace with a modern one, for some the fun is as much in the building and specifying as it is in putting your foot down after. Not everyone wants to cut to the chase.
I'm not disagreeing, or indeed was going down that route - I've seen a period supercharger install on a 56 bug this week, hence that part of my question. I've also owned many modified cars, including a Carloz Sainz Celica WRC with dual stage NOS and water injection hence that part of the question. I wasn't making presumptions, merely trying to contribute a couple of possibilities no one else had at that time is all. The irony of being schooled in losing the 'aircooled' experience, by ripping 'the heart out of the bus' isn't lost on me when threads like this appear - seems the desire for more power is all right but only so far.
There's a few things to consider when undertaking a task like this... Weight of vehicle... You're using the Doka, so technically you can use a 1911cc engine, but on a 1600 box, and smaller than std tires... you're looking for acceleration, not top speed... Big HP requires bigger wheels to put the traction down!! As for engine spec, you can possibly do it with std 1800 valve size heads, but I would fit stainless valves. You'll also want to lighten the valve train, and rotating mass as much as possible... this will increase BHP by a few points, but it will also put less strain on the engine!! If you're thinking of using nitros, then you'll have to use JE pistons, as you'll just burn a hole in the AA 96s... Cam, you could use a web split duration, 86b/86c or 163/86b That'll get you started
Touchy! who said you'd ripped the heart out of it? Anyway, I'm sure it's quite obvious to you really that a very simple place to draw the line is "don't change the engine for a completely different one"? Just as there's a class for racing standard mini's and another for anything goes. It's a classic and it's also quite amusing to see one complete with air-cooled engine, poptop and camping conversion whipping down the strip. Sort of slapping your own face really isn't it? If you're going to change the engine, why not the whole vehicle and use a fast car. It's just an almost arbitrary line that appeals to some. I don't think the prime objective of heading down the strip in a 40 year old camper is really getting the fastest time or "winning" in some way, it's just a big laugh hobby isn't it? Based on silly air-cooled 50 year old engineering. That's what I think anyway. Just a line. Nobody really cares if you put a scooby engine in it, but you're in a different class on the strip if you do. I'm sure you would agree that it's unfair to compare your modern engineering with old German crap.
I'm not touchy at all - and I was quoting some of the garbage posted on here, not myself. I'm not advocating replacing engines, I was contributing to the thread on the topic of an old engine - though the irony of using modern engineering techniques and materials yet maintaining that these things are somehow set apart from a modern engine isn't lost on me. i.e. change fuel delivery system, modern carbs or injection, modern ignition system, new crank, cams, conrods, pistons etc etc. But it's not a modern engine. I'll park this - everyday is a school day isn't it - I'll get back to flat earth thinking.
@Moons I'm not sure how I got drawn into this at all. Personally I don't care, you don't care, maybe nobody cares apart from one or two people who just do it as a wind up. None of this really matters after all.
full balance job and some h-rods. That 86b/86c is a bit lairy for a small engine . going to take my bus down the strip this year ,see if I can beat your time
Counting out fuel injection, NOS, turbos, superchargers, off the shelf engines, having one built for me and water cooled upgrades. The fun is in the building of an aircooled. As I've said I want to 'compete' but in a fun way and on a level playing field. Take it seriously but also have a laugh doing it but not take it seriously enough that it's all consuming in time and finances. I want the sense of achievement of building it myself and seeing something which can trace its routes to the 1920's technology making lots of noise and tearing up a drag strip for a laugh. Otherwise I may as well just turn up in my car
Does this USB take place at the same track?....if so, if you're really only intending to build something for fun, then I think gearing, handling and braking are just as important, if not more so, than balls out performance....I'd go with a tried and trusted (reliable) formula, and spend money on the g/box, tyres, suspension and weight reduction I'd rather have a motor that sticks like sh*t than goes fast in a straight line....especially for racing
Within reason. Getting a bronze and USB membership would be an achievement. I want to be able to drive there, do it, drive home and then use it dailyish
Check out the website ultimate street bays. Its a valid 1/4 mile time. Santa Pod on the UK. I'm planning on doing RWYB at Santa Pod as a try out, but them I'm off to SCC in Norway in August
I've always fancied building a torquey 'square engine ' for a bus ! So what's best for the strip ? Bhp or torque ?
Weber ida's , tool steel lifters a set of big heads and a very good exhaust is where you will end up.you will always want more
