Horney's Sprint/Hillclimb Car V2.0

Horney
Boss Man

All the gear and a vague idea.

Posts: 3,796

Horney's Sprint/Hillclimb Car V2.0 Dec 9, 2016 18:54:20 GMT

Quote

Post by Horney on Dec 9, 2016 18:54:20 GMT

Once upon a time there was a supercharged MX5 car built for sprinting, hillclimbing and trackdays.

IMG_3860 by Nicholas Horne, on Flickr

IMG_3856 by Nicholas Horne, on Flickr

Sadly the tin worm had gone to work on it and the shell was beyond sensible economical repair. Also I'm bored of the supercharger and the fact it puts me in horrible classes for sprinting. 570bhp Mustangs are not the best match for 220bhp MX5.

Went out today and bought this:

Untitled by Nicholas Horne, on Flickr

Untitled by Nicholas Horne, on Flickr

The plan is to swap the following into it from the green one:

Gaz Coilovers
Jackson Racing ARBs
Wilwood 4 posts
Wheels
Strut Brace
Under car braces
Oil Cooler
Ali Rad
TorSen Diff
6 Speed Box
peddle box
Clutch Hydraulics
Ultra light Flywheel
FM Happy meal clutch
4 point Carbing Cage
TR Lane Harness bar
Spark Sprint 5 seats
Harnesses
Momo Prototipo Steeringwheel
Tow Hooks
Fire Extinguisher

You'll notice no engine on that list. I need to source a MK2 1.8 lump for this little lot to bolt to:

Untitled by Nicholas Horne, on Flickr

and then finally paint it to look a bit like this:

Untitled by Nicholas Horne, on Flickr

First sprint is in April/May. No pressure then!

Last Edit: Dec 9, 2016 18:55:13 GMT by Horney

minty Won't Shut Up Posts: 983	Horney's Sprint/Hillclimb Car V2.0 Dec 9, 2016 21:00:30 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by minty on Dec 9, 2016 21:00:30 GMT Vey cool! Never tried throttle bodies, but would love to. I take it engine management is a bit better these days than it was 8 years ago when I last looked into it?

Tom Chats A Bit Posts: 218	Horney's Sprint/Hillclimb Car V2.0 Dec 9, 2016 22:17:20 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by Tom on Dec 9, 2016 22:17:20 GMT Awesome. The filtery things on those trumpets, while aesthetically pleasing looks a bit bloomin' restrictive!

Horney Boss Man All the gear and a vague idea. Posts: 3,796	Horney's Sprint/Hillclimb Car V2.0 Dec 9, 2016 22:23:50 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by Horney on Dec 9, 2016 22:23:50 GMT Yeah they'll probably not go on it once I work out what I can replace them with.

jackyboy Needs Gagging Carpe Diem Posts: 1,494	Horney's Sprint/Hillclimb Car V2.0 Dec 10, 2016 1:20:27 GMT via mobile Quote Select Post Deselect Post Link to Post Back to Top Post by jackyboy on Dec 10, 2016 1:20:27 GMT And if i can save many pounds and get many licenses can we race this at mission motor sport next year?.

Horney
Boss Man

All the gear and a vague idea.

Posts: 3,796

Horney's Sprint/Hillclimb Car V2.0 Dec 10, 2016 8:26:21 GMT jackyboy likes this

Quote

Post by Horney on Dec 10, 2016 8:26:21 GMT

Dec 10, 2016 1:20:27 GMT jackyboy said:

And if i can save many pounds and get many licenses can we race this at mission motor sport next year?.

It will be a purely sprint/hill car so no good for circuit racing as it won't have a full cage.

boringgit Global Moderator Posts: 554	Horney's Sprint/Hillclimb Car V2.0 Dec 10, 2016 15:54:09 GMT jackyboy likes this Quote Select Post Deselect Post Link to Post Back to Top Post by boringgit on Dec 10, 2016 15:54:09 GMT If you're doing all this at Nicks, I would love to lend a hand. Can't beat a Saturday taking cars apart. Plus I csn pikey auto bits that Jayne might need :-P
	Mighty5s Image Uploader

Meerkat Chats A Lot Posts: 489	Horney's Sprint/Hillclimb Car V2.0 Dec 13, 2016 17:09:34 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by Meerkat on Dec 13, 2016 17:09:34 GMT Looks like a nice clean base to start from. Good work!
	>> My Silver Mk1 <<

howardb66 Needs Gagging Posts: 1,220	Horney's Sprint/Hillclimb Car V2.0 Dec 15, 2016 11:23:09 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by howardb66 on Dec 15, 2016 11:23:09 GMT Horney, what diff ratio have you got? The ITB Mk1 I used this year was on a 4.7 & it helped keep it on the boil, especially up the steeper bits.

Ptichka Chats A Lot Posts: 273	Horney's Sprint/Hillclimb Car V2.0 Dec 15, 2016 12:07:00 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by Ptichka on Dec 15, 2016 12:07:00 GMT Been waiting for this thread to appear since you posted the picture of the ITBs, much envy. Can't wait to see how it ends up
	James Black '96 1.8: mighty5s.com/thread/366/little-black

Horney
Boss Man

All the gear and a vague idea.

Posts: 3,796

Horney's Sprint/Hillclimb Car V2.0 Dec 15, 2016 12:53:17 GMT

Quote

Post by Horney on Dec 15, 2016 12:53:17 GMT

Dec 15, 2016 11:23:09 GMT howardb66 said:

Horney, what diff ratio have you got? The ITB Mk1 I used this year was on a 4.7 & it helped keep it on the boil, especially up the steeper bits.

Currently got a 6 speed and 3.6 (or is 3.9?) out of a mk2 10AE/RS.

howardb66
Needs Gagging

Posts: 1,220

Horney's Sprint/Hillclimb Car V2.0 Dec 20, 2016 0:05:24 GMT

Quote

Post by howardb66 on Dec 20, 2016 0:05:24 GMT

Dec 15, 2016 12:53:17 GMT Horney said:

Dec 15, 2016 11:23:09 GMT howardb66 said:

Horney, what diff ratio have you got? The ITB Mk1 I used this year was on a 4.7 & it helped keep it on the boil, especially up the steeper bits.

Currently got a 6 speed and 3.6 (or is 3.9?) out of a mk2 10AE/RS.

I'd keep the gearing low, hopefully it's a 3.9. For example my father in law had a Morgan+4SS with a 3.7 diff in it, the final drive completely dulled the acceleration.

Horney
Boss Man

All the gear and a vague idea.

Posts: 3,796

Horney's Sprint/Hillclimb Car V2.0 Dec 20, 2016 7:24:56 GMT via mobile

Quote

Post by Horney on Dec 20, 2016 7:24:56 GMT

Dec 20, 2016 0:05:24 GMT howardb66 said:

Dec 15, 2016 12:53:17 GMT Horney said:

Currently got a 6 speed and 3.6 (or is 3.9?) out of a mk2 10AE/RS.

I'd keep the gearing low, hopefully it's a 3.9. For example my father in law had a Morgan+4SS with a 3.7 diff in it, the final drive completely dulled the acceleration.

It's quick with charger. It must be reasonably short at the mk2 10ae and RS that this combo came from are fairly sprightly in standard trim.

If it not right Incan always swap the diff for a shorter one anyway.

josho
Chats A Lot

Posts: 285

Horney's Sprint/Hillclimb Car V2.0 Dec 20, 2016 15:07:44 GMT Horney likes this

Quote

Post by josho on Dec 20, 2016 15:07:44 GMT

Dec 9, 2016 22:23:50 GMT Horney said:

Yeah they'll probably not go on it once I work out what I can replace them with.

Nick we have trumpets at my work that will bolt on

I happen to have four of the same ones

theyre 70mm long

Also, I currently run a 6 speed with a 4.3 torsen so you can see the difference once yours is up and running if you like?

Last Edit: Dec 20, 2016 15:12:20 GMT by josho

Bilbo: I'm soldering for the first time today. If I never come online again you'll know I set the car on fire and died horribly.

This guy. :rofl:

howardb66 Needs Gagging Posts: 1,220	Horney's Sprint/Hillclimb Car V2.0 Dec 21, 2016 14:28:51 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by howardb66 on Dec 21, 2016 14:28:51 GMT Horney, this'll help with the revs- www.boundarypumps.com/mazdafordmercury4cylinder/

queenie: Hiya fellas and fellettes. My name is Gary, I am 72, live in rural Victoria (Australia), am an unashamed Anglophile and own a gold 1998 NB. I bought her in 2016, reflecting at the time that I had wanted a car like this since age 15. Yep, took me 50 years! Dec 31, 2023 5:58:34 GMT

Deleted: Hey guys, I’m 49 & from the UK here! Currently restoring/upgrading a Mazda MX5 Eunos Roadster. Got a lot of work to do 🤯😩🫣🤣 Jun 30, 2024 16:21:03 GMT

Simon: Nice and quiet in here, but I'm back with vengance! Car with a knackered crank is now having a full rust and engine resto at Basset Down! Will be spenny, but excited to have a 'good' car again. Jul 2, 2024 16:29:20 GMT