lightly ported inlets and exhausts, 1 mm bigger vales, 176 cam { large and lumpy } 1556 cc, light flywheel / backing plate. Done on a chassis dyno in Kilsyth.
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| Torque curve graphs.. chasing 100lbs/ft https://www.ausmini.com/forums/viewtopic.php?f=2&t=84057 |
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| Author: | FNQ [ Fri Jan 03, 2014 10:12 am ] |
| Post subject: | Torque curve graphs.. chasing 100lbs/ft |
Not wanting to get into a HP / dyno war of words, but i am interested in engine specs and cams used in chasing flat wide torque curves, specifically those giving 90-100+lbs/ft of torque. A swiftune SW8 to start off. http://www.swiftune.com/Product/1447/swiftune-sw8-billet-camshaft.aspx used 1380/1.5rr Just curiosity, not buying or building at the moment. and I don't have any dynos of my own so sorry |
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| Author: | justfanginaround [ Fri Jan 03, 2014 1:22 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
lightly ported inlets and exhausts, 1 mm bigger vales, 176 cam { large and lumpy } 1556 cc, light flywheel / backing plate. Done on a chassis dyno in Kilsyth. |
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| Author: | justfanginaround [ Fri Jan 03, 2014 1:32 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
i forgot to add 14.5 to 1 comp + good fuel |
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| Author: | drmini in aust [ Fri Jan 03, 2014 3:43 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
 Resize of 1412 + HS6 by k_green1310, on Flickr 1412cc stroker, RE13 cam, 1.46:1 Corolla rockers, single HS6 carby on RE7 manifold, Maniflow med bore LCB. 12G1316 (LS) head, ported with Mk2 S valves. C/R 10.5:1. Fuel BP98 Ultimate. Note with a 45 Dellorto on instead, and 38mm chokes in, torque was only 107ft/lb, and HP was 114. But yes it sounded tuffer.  [edit] miniDave's 1330 rally motor made about 97ft/lb last year on the same engine dyno, it has RE13 cam, 1.5:1 `forged' MSC rockers, near stock Mk2S head (GR profiled seats) and twin HS4s. I will bung the chart up here when I've found it.... [edit 2] Here `tis-  miniDave's by k_green1310, on Flickr [edit] Laingy's 1377 stroker- RE83 cam, 1.3 roller rockers, HS6 on MSC manifold, near stock 1100S head with S valves and GR profiled seats, Maniflow med bore LCB:  120709 Mini Engine 1377cc Graphs GR by k_green1310, on Flickr |
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| Author: | mickmini [ Sat Jan 04, 2014 11:32 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
mickmini wrote: Been meaning to put these up for a while now. So here it is   Look at how flat that torque line is. I can hardly call it a curve. Makes it so easy to drive. When i missed second in the hairpins a few times at Wakefield, I simply stuck in third and let the torque pull me out  There is a bit more to be had with a decent set of 1.5:1 rockers, but that can wait. cheers michael build specs are in this thread http://www.ausmini.com/forums/viewtopic.php?f=5&t=31567 cheers michael |
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| Author: | benjamin [ Sun Jan 05, 2014 7:25 am ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
1152cc re13t 1 3/4'' su This is my first build back in 07 didnt get it on the engine dyno with the bigger turbo but it deffinatly didnt have a flat torque curve. the T2 was nice and gentle pulling good torque from 3000 onwards peak torque with 6psi nice and low. 
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| Author: | FNQ [ Sun Jan 05, 2014 10:16 am ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
Thanks gents, love those curves, or as Micheal suggests non-curves since they are so flat. Benjamin good to see the little guys (albeit with Turbo) getting in amongst it, ALL of those curves have excellent low down pulling power and/but are primed for both HP and torque in the 5500 -6000 range. To me these seem like excellent fit for purpose builds. Differences in final drives?- and also Michael and benjamin what cams? (sorry Michael, saw your build specs link thus time) Keep them coming. |
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| Author: | benjamin [ Sun Jan 05, 2014 10:58 am ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
FNQ wrote: Thanks gents, love those curves, or as Micheal suggests non-curves since they are so flat. Benjamin good to see the little guys (albeit with Turbo) getting in amongst it, ALL of those curves have excellent low down pulling power and/but are primed for both HP and torque in the 5500 -6000 range. To me these seem like excellent fit for purpose builds. Differences in final drives?- and also Michael and benjamin what cams? (sorry Michael, saw your build specs link thus time) Keep them coming. final drive is 3.44 was perfect for everyday driving would alow the turbo to hit full boost at 80km/h in 4th cam is RE13T |
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| Author: | mickmini [ Sun Jan 05, 2014 1:41 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
FNQ wrote: Thanks gents, love those curves, or as Micheal suggests non-curves since they are so flat. Benjamin good to see the little guys (albeit with Turbo) getting in amongst it, ALL of those curves have excellent low down pulling power and/but are primed for both HP and torque in the 5500 -6000 range. To me these seem like excellent fit for purpose builds. Differences in final drives?- and also Michael and benjamin what cams? (sorry Michael, saw your build specs link thus time) Keep them coming. The power comes at the higher revs simply because power = torque x revs  If you have the torque curve so flat, power becomes inevitable.I also have a 3.44. Seems to be ideal for what i use it for. Racers traditionally went for lower final drives with a close ratio gearset to keep the engine reving it's nut off because the torque curve was very peaky. With such a wide torque curve there is no advantage to keeping it revving all the time. Mine is also RE282. However, as you see from the build spec, there is a fair amount of head work and stroking going on. cheers michael |
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| Author: | drmini in aust [ Sun Jan 05, 2014 6:53 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
I have an RE282 in my 1360, with 1.5 rockers. It made 86.6HP ATW (ausmini dyno day)- GR says it would have ~125HP at the crank. It runs a 3.647 diff in a Clubby GT box. No idea what the torque actually is (it's not been on the engine dyno) but I'd say it would be north of 105ft/lb. The 940 head was ported before I got it, it now flows about 120cfm on GR's flowbench. The 282 cam and 1.5 rocker combo gives max power at around 7000-7200, however it will pull away clean from 40kmh in 4th gear since I jetted the Dellorto 45 properly with an A/F ratio meter. Graham says an RE282 cam is worth 10HP over an RE13 any day of the week, but you do lose a bit of midrange torque so he doesn't recommend it for a daily driver. It's all fun from 5000-8000rpm though!
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| Author: | IndigoBlueCooperS [ Sun Jan 05, 2014 9:13 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
Another RE83. HS6, 1275 stroker, 1.5 rockers and a bit of head work. Not quite 100 ft/lb, but I would consider it flat. 
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| Author: | FNQ [ Sun Jan 05, 2014 10:18 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
Hi Indigo , i too would consider it flat...... excellent Doc and others is the 282 cam the one i've heard of as the diesel cam? - same profile as early or modified since first out or NLA???? |
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| Author: | drmini in aust [ Mon Jan 06, 2014 7:21 am ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
No the `diesel cam' is the RE83. It has shorter duration and quite aggressive acceleration on the lobes, Graham doesn't usually recommend using 1.5 rockers with it. The RE282 is his `sprint' cam- it became NLA for a while as the master got lost in Melbourne. However Graham has since made another master so it's available again if you wanted one. I think it's had a few improvements too. In my 1360 with 1.5 rockers it will take full throttle from about 2500rpm, is on cam from 2800 but really hauls ass from 5000 to redline (now set at 7500 in deference to my old Mk1 S EN40B crank...) |
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| Author: | Lillee [ Mon Jan 06, 2014 2:03 pm ] |
| Post subject: | Re: Torque curve graphs.. chasing 100lbs/ft |
 1330cc with RE13 and 1.5 rockers, 10.5:1 CR. It's not so much one thing that will give you 100ft/lbs, it's a combination of many small things (except for the cylinder head of course). For instance I run a GR 5.5inch intake which needs cutting of the firewall. This alone is worth about 7bhp or about 3-4ft/lbs but more importantly the torque comes on earlier and stays on later (hence flatter curve). With the cylinder head, yeah well that is worth about 30ft/lbs on it's own... |
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