Valentinik
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| posted on 8/10/14 at 09:42 PM |
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Duratec & MX5 5 Speed Gearbox Angle
Hi guys, pleased excuse me if this is a stupid question or if its been covered before, but i've done a search and can't find anything on
the subject.
Im just about to place an order for an Indy R kit, i was intending to use an ST 150 duratec engine and an mx5 5 speed gearbox. I understand the
gearbox mounts to the engine at a 10 degree angle (correct?) and mazda state the gearbox can be mounted at a 10 degree angle.
What I'm wanting to know is, is there an advantage to mounting the gearbox at an angle over the engine at an angle? If the engine is mounted at
an angle would this cause me to encounter problems with manifold and inlet/itb clearance fitment?
Any info on it is appreciated.
Thanks
Mike
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snapper
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| posted on 9/10/14 at 05:58 AM |
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I would thing mounting the gearbox at an angle would make the gear change feel quite strange.
Engine at an angle would mean a short sump would need to made with an angled base
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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mcerd1
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| posted on 9/10/14 at 07:33 AM |
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I might be wrong, but I thought it was only the 6 speed box that fitted the duratec's without an adapter ?
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Valentinik
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| posted on 9/10/14 at 07:59 AM |
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From what I'd seen the mk3 mx5 came with both a 5 speed and a 6 speed option. I'm not sure if they were fitted to different type engines?
Could someone confirm for me?
Thanks
Mike
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pewe
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| posted on 9/10/14 at 09:38 AM |
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Whilst 10 degrees isn't a huge cant if you are altering the engine's attitude you would need to check sump oil level, oil pump pick up
angle and cam box oil drains as well as inlet tract angle.
Having been through the same exercise (but different engine/gearbox) I'd say a bell housing adaptor plate is the easiest way to achieve the
mating. Both engine and gearbox can then retain their original angles - space permitting.
Some time ago PPC made their own plate - should be somewhere in their archive.
HTH.
Cheers, Pewe10.
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Valentinik
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| posted on 9/10/14 at 09:04 PM |
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thanks for the input guys, i've done a little search on turbosport and it seems people tend to fit them with an mx5 sump and oil pickup pipe and
run the engine at 10 degrees as this was how the duratec was originally designed (being a mazda design) apparently.
Thanks
Mike
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Valentinik
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| posted on 15/10/14 at 09:30 PM |
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I've just received my ST150 engine and my mx5 5 speed is due to turn up later this week, so if anyone is interested how they look mounted
together i'l take some pictures and post them up.
Mike
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PorkChop
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| posted on 15/10/14 at 09:58 PM |
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quote:
Originally posted by Valentinik
From what I'd seen the mk3 mx5 came with both a 5 speed and a 6 speed option. I'm not sure if they were fitted to different type engines?
Could someone confirm for me?
Thanks
Mike
The 1.8 came as a 5 speed only, the 2.0 non Sport is a 5 speed, the 2.0 Sport is a 6 speed.
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danny keenan
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| posted on 15/10/14 at 10:07 PM |
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Hi
We have just fitted a duratec engine with an mx5 box.the gearbox is designed to run at 10 degrees to get the gear leaver straight.
If you look at race line the sell a sump specific for this configuration
If you have a look on our Facebook page there's some pictures on there.
Thanks Danny
Mk sportscars
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mcerd1
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| posted on 16/10/14 at 07:31 AM |
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quote:
Originally posted by Valentinik
From what I'd seen the mk3 mx5 came with both a 5 speed and a 6 speed option. I'm not sure if they were fitted to different type engines?
Could someone confirm for me?
sorry I must have been thinking about the mk1 / 2 5 speeds....
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