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There's nothing stopping you having a complete set of MX5 running gear with a Zetec and a Type 9 box for example. Heck, there's nothing wrong with you using the uprights and brakes from one marque, with a diff from another, engine and box from a third etc etc. |
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We all have different views and ideas it's a bespoke hand built sports car my opinion is mx5 is readily available I went for mx5 and made my own version of Phil's rear diff cover if you look at my pics but use the Sierra rear end frame so you could swap to a Sierra diff at a later date.
Why do you want to go duratec though? A nice jap engine are pretty much indestructible if it's power you want strap a mini supercharger to it or do a turbo conversion later! (That's my route) Whatever you decide there is lots of info between the guys on this forum that can help in your build!!
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nothing is impossible you just need to try harder!!! Build pictures http://s830.photobucket.com/user/brownster79/library/ |
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Thats my thoughts on using a mx5 rather than a sierra. Was the diff cover difficult to make? Not really decided 100% on the ultimate end game yet, I think I like the simplicity of a non charged engine and my goal will be 150-200 bhp. I've got a supercharged Golf R32 and as much as I love the supercharger I think I'd rather have something just solid and reliable in an engine. More food for thought though, thanks.[/quote]
It's not difficult if your blessed like me to have a lathe at my disposal!! It's just so handy to look at something then have a brain wave on how to make it. 1.8 Mazda mx5 larger injectors multisquirt ecu or equivalent port polished head induction kit will be pushing into the 150 area bearing in mind these cars weigh 600kg roughly so bhp per tonne about 250 it's a waste if you can't get the power down!!
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nothing is impossible you just need to try harder!!! Build pictures http://s830.photobucket.com/user/brownster79/library/ |
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It's not difficult if your blessed like me to have a lathe at my disposal!! It's just so handy to look at something then have a brain wave on how to make it. 1.8 Mazda mx5 larger injectors multisquirt ecu or equivalent port polished head induction kit will be pushing into the 150 area bearing in mind these cars weigh 600kg roughly so bhp per tonne about 250 it's a waste if you can't get the power down!![/quote] I was spoiled and had a Caterham CSR200 for 4 days drive around the highlands of Scotland and would really love to try to emulate that power. I'm also contemplating joining the local sprint club for a bit of fun. But it's all pie in the sky until I actually make a start. I've managed to swing a work trip south next week so going to tie it in with a trip to Stoneleigh for my fist visit to a kit car show. Think I might have to leave my wallet behind though or I'll do something stupid. |
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I chose the sierra route with the thinking of using a nice easy 1600 pinto engine then swapping it out later post iva for something with serious grunt.....I chose the serious grunt first because in hindsight I am glad I chose my prefered engine over the pinto as it would have been soul destroying to do the upgrade after iva ....my advice would be to go for the engine you want in the car with the thoughts of future tunability so the later ford twin cams are a good choice as they will give a proportionate power increase to what you spend on them.My choice of engine gave me this massive tunability but it was a hard install. If I had gone the other way I would more than likely got sick of it, just my tuppence worth
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If you go down the mx5 route stay mx5 as the engines as mentioned are very good and there are plenty of tuning options available. The wiring loom from the donor needs to be used so if you were to change the engine you would need to retire the whole car.
If you were to go zetec it would be easier to go sierra donor route and follow the book spec chassis. I've gone down the mx5 route. Mk2 may be a way to go with the steering as you will be able to get more lock on the steering due to the arms being higher. There are lots of cheap parts available and lots of donors. David
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Click to see my build photos on Flikr http://www.flickr.com/photos/67112582@N03/ Saturn MX5 Based Chassis, Limited Slip Diff & 2.4 Quick Rack. Build cost.... seems to be spending more on tools than car bits at the moment! (they will be handy in the future though). Car iva'd and passed 15/08/2014. Finished weight 572kg. |
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If I was starting again I'd probably go for a late Mk2 MX5 donor which put out around 150bhp as standard.
I was tempted at one point to swap my 1.6 for a Mk2 engine, but I'm not sure I can face the job of rewiring the whole bl00dy car again. I'd definitely advise you to build it the way you want it from the start. If you've got your heart set on a Duratec have a look at the Mk3 MX5. Not the cheapest donor, but the diff looks easier to mount and they come with a Mazda MZR L engine - Ford also use this engine, but re-badge it as a Duratec. |
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