MX-5 NC with RX-8 231 Engine

Paul_13 · June 19, 2019, 06:41:32 PM

Quote from: boosted on June 19, 2019, 06:36:52 PM
Just a thought...what are your engine mounts like? If there worn or weak then that manifold mount will acting as an engine mount too. too...worth checking...have you got ant harsh vibrations?
My exhaust is totally isolated from chassis bar 1 silencer mount bobbin. I put a camera on exhaust shortly after build and despite solid ( landrover) engine mounts engine still moves fair bit id say 5mm til i solid mounted gearbox with again a landrover engine mount.
And whilst looking over your car at Jdm...i did noticed a lambda sensor tad close to chassis tunnel..be a good time to reposition the 02 boss.

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The heat shield was sagging down quite bad. I taped the heat shield back with metal tape. Loads of room now.
Engine mounts however... I think I need to fill them. They're not leaking but I noticed the engine bobbing up and down from underneath when I push the sump

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Jamie R · June 19, 2019, 06:42:28 PM

Quote from: Paul_13 on June 19, 2019, 06:23:24 PM
Check you out with your flashy CAD skills!
I'll see if my neighbour has any spare metal lying about in his workshop.
Cheers

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Lol not really skills....... its part of my Job.

Ive done you a pretty picture in 3D

In all seriousness...........Im not expert on really complex stuff, if anyone needs anything knocking up, give me a shout.

Paul_13 · June 19, 2019, 06:49:42 PM

On another note, does anyone have a rx8 exhaust back box lying about? I need the measurements between the tail pipes. Centre - centre

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Jamie R · June 19, 2019, 06:58:04 PM

Sorry Paul, cant help you there......... got rid of mine ages ago

on the subject of exhausts I did however weigh in my old Catalytic converter yesterday after Clive and Jon told me to junk it.

Im Â£330 better off

boosted · June 19, 2019, 07:36:54 PM

When manifold off rock engine again...if more then there bad.

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Jamie R · June 19, 2019, 08:02:29 PM

From memory the RX8 engine mounts aint cheap?

That why you went with Land Rover Jon

Paul_13 · June 19, 2019, 08:03:14 PM

I think it's cracked the whole way along

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boosted · June 19, 2019, 08:05:00 PM

Yep...solid n dirt cheap...made up some spacers in alloy at work to adjust height.

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Jamie R · June 19, 2019, 08:07:36 PM

Thatâ€™s no slipping of the torque wrench Paul

boosted · June 19, 2019, 08:13:42 PM

That be metal fatique...work hardened due to acting as an engine brace/mount.
I think you can remove and resin fill the engine mounts?

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Paul_13 · June 19, 2019, 08:19:17 PM

Quote from: boosted on June 19, 2019, 08:13:42 PM
That be metal fatique...work hardened due to acting as an engine brace/mount.
I think you can remove and resin fill the engine mounts?

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I was going to do that with the engine mounts. I've ordered poly urethane and I have a spare set knocking about

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boosted · June 19, 2019, 08:20:51 PM

Cool...bloody silly them 8 mounts..mind you the fd came with solid alloy 1s...absolutely horrible vibration and noise throughout car.

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Paul_13 · June 19, 2019, 09:37:38 PM

That was a struggle. Don't laugh at the sandals!

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Paul_13 · June 19, 2019, 09:40:01 PM

Might aswell but a new one lol

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Paul_13 · June 19, 2019, 09:42:50 PM

Exhaust gasket blown to shit also

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