07-17-2015, 06:28 AM | #29 |
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Yes but the stock mapping does not help. I mentioned this elsewhere and a few people piped up and said they'd stalled. Sure you learn to drive around it but my view is the initial throttle opening isn't particularly user friendly. It does make it feel nice and punchy on torque when on the road in a straight line but coming out of slow corners on track it slows you down with the torque spike created. Softening it has made it drive better for me.
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The Following User Says Thank You to Tim Radley For This Useful Post: | Captain Snooze (07-17-2015) |
07-17-2015, 06:48 AM | #30 | |
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Just to confirm, was the dyno on the stock exhaust manifold aswell? I've been noticing some of your posts around the boards, I'm really excited by what you've been doing. |
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07-17-2015, 06:52 AM | #31 | |
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you can get their with cheap headers and E85 or petrol cheap headers and full exhaust or ultra expensive headers stock exhaust on petrol or cams head work and likely headers and exhaust as per @Tim Radley appears something at that power level is holding it back. |
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The Following 2 Users Say Thank You to steve99 For This Useful Post: | Tim Radley (07-17-2015), Valentino (07-18-2015) |
07-17-2015, 06:54 AM | #32 | |
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The peak figure i ended up with was not what a few people were expecting. But as always the problem with a dyno chart like that is it is a full throttle run from 2000-8000rpm which is not representative of how it is driven in real life. The transient response of the engine is greatly improved now compared to stock. The OP was emailing me asking about the engines response and idle with these cams. It is a shame its not a bone stock engine though for me to give him a 100% solid answer but the work i've done shouldn't affect idle quality compared to stock. A couple of people who watched the video said it does not sound nor accelerate like other 200bhp 86's. I don't know myself as only been in this one and when it was stock. It gets to 100mph about 3 seconds quicker than before. I'll dig the exact figures out later. My ecu is logging gps as well as all wheels speeds.
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07-17-2015, 08:57 AM | #33 | |
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This is good news for my 2.3ltr build.... As for the cams with a stock engine what kind of max lift do you think we can use with stock Pistons? HKS states you have to use their pistons with their cams. But the only way to get the pistons is with the $5k Stroker kit. When I had my pistons made I allotted room for 1mm Over valves and a 13mm Lift. I may never use it but it is there.
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The Following User Says Thank You to celek For This Useful Post: | Sherb (10-07-2016) |
07-17-2015, 09:19 AM | #34 | |
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The Following User Says Thank You to Tim Radley For This Useful Post: | celek (07-17-2015) |
07-17-2015, 10:19 AM | #35 | |
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The Following User Says Thank You to celek For This Useful Post: | swarb (07-18-2015) |
07-17-2015, 11:02 AM | #36 | |
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I just flashed to stage 2 with OFT and an UEL header and by the numbers it's clear that I'm getting to 100mph much faster. However the power is much more consistent everywhere in the rev range, so it feels much less dramatic as I row through the gears. |
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07-17-2015, 11:07 AM | #37 |
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Tim: Do you think a stock car would start and drive with stock Ecu and the mild cams installed? Wondering if the car would make it to a tuner after install.
What advantage do longer valves give you? Last edited by wootwoot; 07-17-2015 at 06:07 PM. |
07-17-2015, 02:57 PM | #38 | |
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And his name is Tim. Yes it will make it there. Lets be patient and not get ahead of ourselves. Longer valves? Interference/clearance is the short answer. |
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07-17-2015, 06:50 PM | #39 |
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Any tech articles, photos or numbers to detail this? I would love to read about these differences.
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07-18-2015, 04:06 PM | #40 |
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It may reflect those longer valve stems and rocker changes too.
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The Following User Says Thank You to celek For This Useful Post: | Lonewolf (07-19-2015) |
07-20-2015, 05:45 AM | #41 | |
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Lift wise, the inlet on one was just over 0.5mm more than the other.
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The Following User Says Thank You to Tim Radley For This Useful Post: | Lonewolf (07-20-2015) |
07-20-2015, 03:26 PM | #42 |
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@Tim Radley
Hey Tim, This is some really amazing stuff, thanks for sharing your findings! Question... So, just to clarify that nice dyno chart has the following mods, please correct me if I am wrong... - Piper Cams - Upgraded single valve springs - Tuned ECU (Motec) - Stock header - Stock internals, other than cams/srpings, but blueprinted. Does it have any of the port filling work done to it, or are the ports still stock? Thanks!! |
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