| Not A Fizzy But A "smashing Car" | |
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| Tweet Topic Started: Aug 8 2006, 10:01 AM (730 Views) | |
| tommo32 | Aug 16 2006, 08:51 PM Post #31 |
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Tommo
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jeasus christ fizzy DX, i work for cummins turbo technologies. a turbo has an oil supply to it. every turbo does. an intercooler goes between the turbo and the intake manifold and its job is to cool the air before it goes into the engine. and think about it, if oil turns to sludge, half of that sludge is gonna be around the engine not in the sump, so effectively the oil would go down and have to be topped up with more. plus an engine will probably run on semi sludge anyway, before it goes cakey. you never know, if the car had an oil leak (rear crank seal, another ford v8 weak spot) then effectively the oil would be refreshed as it wasd topped up. |
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| Drumbrake | Aug 16 2006, 08:53 PM Post #32 |
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Beer anyone?
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60,000 rpm, shut it tommo no way. yea, turbo is called by an intercooler, and has a pressurised lubrication system that syphons off the engine sump. If someone was to put in say a thinner oil it could bugger up the turbo. |
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| tommo32 | Aug 16 2006, 09:06 PM Post #33 |
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Tommo
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im tellin ya ive endured a 2 day induction course of one of the the worlds leading turbo manufacturers where they developed the VG turbo and a turbo will spin upto 60,000 rpm. i dont see why thats hard to believe. |
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| fizzy DX | Aug 16 2006, 09:24 PM Post #34 |
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Fizzy DX
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Ok Ok clam down...i didnt know you worked at the turbo factory...but my point is that i didnt think a engine would make 80,000 miles running on sludge oil, unless the engine was indestruable. Ive heard of new cars having engine trouble because the owners havent put any oil in it for a few years and the original oil becomes conjealed and damages the main bearing causing them to knock then ruin the engine... |
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| tommo32 | Aug 17 2006, 04:31 PM Post #35 |
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Tommo
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thats why its an extrodinary story, because most car engines would disintegrate at about 40,000 |
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| Drumbrake | Aug 17 2006, 05:43 PM Post #36 |
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Beer anyone?
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meh, just the luck of the draw at the end of the day. yes tommo, following last nights discussion i now realise how fast turbo's spin! |
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| tommo32 | Aug 17 2006, 08:51 PM Post #37 |
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Tommo
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thnk you, at last. see... not just a hat rack! |
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| Frodo | Aug 17 2006, 09:17 PM Post #38 |
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The 65mph Club Member
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you want to make me a turbo setup then tommo
how much is it for a decent turbo setup from you? albeit im going to be running it on an A-series (in an mg midget - rwd - 5 speed sierra box) id like to get away from the standard "get an mg metro turbo manifold and strap it to the car - sorted" sort of method.... turbo's spin rediculously fast! they are called turbines for a reason, how fast do you think jet engines spin the intercooler doesnt cool the turbo AT ALL, it cools the air generated by the turbo (you wouldnt want to go pump warm-ish air into ya carb now would ya!) some via air-to-air or water-to-air which is basically a heat exchanger (water running around the air, cooling the air on the inside) the colder the air the denser the air, the denser the air the more air per cm3, the more air per cm3, the more air available, the more air available + more fuel = more power = POWAAHHHHHHHHHHHHHHHHHH hotter cams dont change the power the engine has, just moves the powerband (making it nicer (or worse in very hot race cams) to drive) high lift rockers are piss cheap for a-series and are a good buy as theyre generally very well made (for very little cash) best gain would be to port polish an a-series head completely, use some slightly larger high flow valves and also match the inlet/exhaust ports completely, the inlet ideally wants to be in a shiny colour (silver/white/chromed) with the insides as highly polished as possible, while the exhaust (get a tubular) would benefit most from either being powdercoated black or being heatwrapped (warmer exhaust = less dense gas = quicker moving gas = better) this basically applies to any 4 stroke (and 2 stroke) engine on the note of big mofo engines etc and sludge explain how a 1966 landrover series 2.25 petrol can survive on cheap piss for fuel (not literally - but close) and have literally no oil, yet still run for ages... its all about the high tech design baby... consider a harley as the low tech approach, and i dunno an R1 as ya japanese highly tuned supshit the supshit may be quick and have good bhp and even better weight ratio, but i gaurentee it wont last 50k at rougly 500bhp+ (**** i doubt it would last 20k) where as a barely tuned american v8 (or a british 4 pot such as a landrover block) that has a flywheel the size of ya house and pistons made out of coke cans, ya' generally aint putting much/any stress on any of the components, which also leaves ALOT of potential for tuning... most japanese engines are very high spec out the factory... american motors are like.. 10% of their potential saying that, ive seen many 800bhp hemi cuda's with 10.4L v8's... i wonder how long they last before they neeed a rebuild... but then again id like to see them take a corner faster than 30mph.... all cars/bikes have theyre advantages and disadvantages... some more than other, but its all about sinking cash, if you want to spend 10k on a supra just to spend 50k more on it in turbo's professional tuning and the shiz then go ahead... but i gaurentee its unlikely to last. where as... you could spend 1k on a fizz theres lasting satisfaction gaurenteeed!
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| fizzy DX | Aug 17 2006, 09:39 PM Post #39 |
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Fizzy DX
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Cant beat tunign an a-series engine...i got a 1030cc mini cooper engine....got standard cooper head thats been highly polished and i think its been ported some time ago.... |
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| Frodo | Aug 17 2006, 11:32 PM Post #40 |
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The 65mph Club Member
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aye... but they do have theyre limitations... but hopefully i can over come most/all of them lol... im aiming for about 100bhp N/A, but it will be built with plans for a turbo, therefore aiming for roughly 180bhp with some tweaking... in a car that weighs near around 600kg (possibly less)... you do the maths, thats quite a good power/weight ratio.... |
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| hazel | Aug 18 2006, 10:54 AM Post #41 |
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MIDLANDER!!!!! There can BE only ONE
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sold :rolleyes: |
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| fizzy DX | Aug 18 2006, 11:37 AM Post #42 |
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Fizzy DX
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I worked out that my mini would weight around 650kg with me in it...so more power is going on the wheels rather than pulling the car along.... Im aiming for around 70bhp for my engine...its not alot but its impressive to be getting 70bhp+ out of a engine that originally had 40bhp...ive had my bhp estimated on my current mods and its between 58-62bhp... Have you thought about using a supercharger instead? there was a 850cc mini that was mildy tuning with a supercharger on it that had 85bhp...but the supercharger was a 1960's one made by shorrock superchargers...not many around now but there was one on ebay a few months ago that went for £250 and it came with loads of bits.... |
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| Frodo | Aug 18 2006, 12:47 PM Post #43 |
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The 65mph Club Member
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yeah i thought about a shorrocks supercharger... but i love turbo's... the feeling when it kicks in is so immense, and i also love the sound of the wastegate... awww yeah plus shorrocks superchargers on mg midgets require huge bonnet bulges for the plenum chamber.... and yeah.. a 650kg mini is piss easy to make (strip out, hell i reckon i could do it with a rollcage still in there!) and 70bhp out a 1098 should be quite easy... our 1275 is @ an estimated 70bhp right now... which should make 100bhp quite easy to get hold of... my plan is to basically just have it as a fun car/track car, hopefully i can afford to ditch the leaf springs and get the fully adjustable coil over conversion... |
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| tommo32 | Aug 18 2006, 02:41 PM Post #44 |
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Tommo
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as for the price of a turbo setup, ill give you an indication of what it would cost. the turbine wheel is cast up then machined. the casting alone costs the company $800 each. i would think a turbo would be around 6 grand. |
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| fizzy DX | Aug 18 2006, 04:27 PM Post #45 |
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Fizzy DX
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my mini isnt a 1098cc, its a 998cc bored out to 1030cc....and i need to do quite abit of work on the head and upgrade the cam and get a weber carb to get in the 70's...or fit a 1275 head and the other mods. I saw a turbo for a vw passat tdi on ebay last night...went for £7.50 including p+p £22.50... |
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