j_jza80 Posted February 10, 2016 Share Posted February 10, 2016 What setup are you running? A GTX3576R, way smaller (it's only () a 600hp turbo), but my goals aren't power orientated Quote Link to comment Share on other sites More sharing options...
Luxluc Posted February 10, 2016 Share Posted February 10, 2016 A GTX3576R, way smaller (it's only () a 600hp turbo), but my goals aren't power orientated Let's see how long you're gonna keep it Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted February 10, 2016 Share Posted February 10, 2016 Let's see how long you're gonna keep it I'm not going to start chasing numbers. If I want a little more I can change to an FMIC, aftermarket plenum, 4" downpipe and 4" exhaust system. I'm already going to be pushing the safe limits of the gearbox, and I don't want to end up building the engine. I think 550hp-600hp is plenty for my favourite roads. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted February 10, 2016 Share Posted February 10, 2016 I'm not going to start chasing numbers. If I want a little more I can change to an FMIC, aftermarket plenum, 4" downpipe and 4" exhaust system. I'm already going to be pushing the safe limits of the gearbox, and I don't want to end up building the engine. I think 550hp-600hp is plenty for my favourite roads. Ok Quote Link to comment Share on other sites More sharing options...
Sheefa Posted February 10, 2016 Share Posted February 10, 2016 I think 550hp-600hp is plenty for my favourite roads. Liar Quote Link to comment Share on other sites More sharing options...
GlennK Posted February 11, 2016 Author Share Posted February 11, 2016 Even 700+hp gets pretty boring....so still not decided yet. 6466 is a bit faster spooling (but not anywhere as powerful) but with a built engine and mods I'm inclined to go for a 6870...and live with driving round the track in 2nd and 3rd gear only Quote Link to comment Share on other sites More sharing options...
Hemanhead Posted February 11, 2016 Share Posted February 11, 2016 Even 700+hp gets pretty boring....so still not decided yet. 6466 is a bit faster spooling (but not anywhere as powerful) but with a built engine and mods I'm inclined to go for a 6870...and live with driving round the track in 2nd and 3rd gear only This is exactly what i am thinking. The 6466 just doesn't seem to produce the goods on pump fuel, it really wants ethanol. And if i'm building an engine, I want it to make the power all the time. I do wish there was an inbetween though, its either 900 or 1100 rating Quote Link to comment Share on other sites More sharing options...
Parry_10 Posted February 11, 2016 Share Posted February 11, 2016 I went 6870 with vvti head to aid the spool Quote Link to comment Share on other sites More sharing options...
GlennK Posted February 11, 2016 Author Share Posted February 11, 2016 This is exactly what i am thinking. The 6466 just doesn't seem to produce the goods on pump fuel, it really wants ethanol. And if i'm building an engine, I want it to make the power all the time. I do wish there was an inbetween though, its either 900 or 1100 rating +1 Exactly so - and even on E85 I'm not convinced Quote Link to comment Share on other sites More sharing options...
GlennK Posted February 11, 2016 Author Share Posted February 11, 2016 I went 6870 with vvti head to aid the spool With you on that...but what improvement did you get? The graph needs shifting to the left by about 1000rpm! Quote Link to comment Share on other sites More sharing options...
Hemanhead Posted February 11, 2016 Share Posted February 11, 2016 I went 6870 with vvti head to aid the spool I've got a VVTi engine now aswell Mr Parry With you on that...but what improvement did you get? The graph needs shifting to the left by about 1000rpm! I think the general consensus is it will yield about 500rpm Glenn which could change if you went with a smaller a/r i guess. But in my mind that defeats the point of having a large turbo in the first place. Watch Luc's build with great interest, he is going with a 6870 which is being mapped first on a normal head, then later with a VVTi so we will have all the answers. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted February 11, 2016 Share Posted February 11, 2016 (edited) Chris' setup (6870 with VVTi) is the perfect one imo. Krister frim Finland reported 1000+rpm improved spool when he went from 3.0 non-VVTi to 3.4 VVTi. Most is due to the VVTi. - - - Updated - - - I will try to get a proper back to back comparision, as I'm really interested to see what is really behind the VVTi myth Edited February 11, 2016 by Luxluc (see edit history) Quote Link to comment Share on other sites More sharing options...
GlennK Posted March 13, 2016 Author Share Posted March 13, 2016 Luc, when are you starting your dyno runs? Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted March 13, 2016 Share Posted March 13, 2016 This was our latest dyno sheet from Abbey motorsport the other week. Will be going back on the dyno soon to finish off mapping due to a gearbox fault. Quote Link to comment Share on other sites More sharing options...
GlennK Posted March 13, 2016 Author Share Posted March 13, 2016 Chris, looking forward to seeing the graph improvements! Quote Link to comment Share on other sites More sharing options...
GlennK Posted April 5, 2016 Author Share Posted April 5, 2016 Gents, any updated dyno results? Need to see 6466 v 6766 v 6870...as I must make a decision soon... Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted April 5, 2016 Share Posted April 5, 2016 6870 is the daddy turbo. Some tasty builds going this route now Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted April 5, 2016 Share Posted April 5, 2016 Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted April 5, 2016 Share Posted April 5, 2016 That's from my 6466 gen 2. Had 60% ethanol in the tank on that run. Boost tops out at 1.6/1.7 bar but that's probably not helped by 4" pipework and a 110mm TB! Lol Quote Link to comment Share on other sites More sharing options...
GlennK Posted April 5, 2016 Author Share Posted April 5, 2016 Thanks Budz - looks consistent with Chris's Dyno. I'm waiting for Luc's 6870 dyno run soon... Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted April 5, 2016 Share Posted April 5, 2016 We will be back on the dyno soon once we have a built box back in. Quote Link to comment Share on other sites More sharing options...
Sheefa Posted April 5, 2016 Share Posted April 5, 2016 I'll have the 6466 Gen 2 installed in the next month or so and will let you know you mate. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted April 5, 2016 Share Posted April 5, 2016 My 6766 Quote Link to comment Share on other sites More sharing options...
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