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V6 supercharged 3.8 into NA MX5
Posted: Wed Sep 05, 2012 5:45 pm
by steverisingsun
Hi Guys,
just starting a build thread, right section I hope.
I have an early series MX5, I am fitting up the LY6 from a VT/X, auto [I am getting old]
ECU is off tomorrow to be modified, when it gets back, out comes the Commodore bits.
Photos when I can
Steve
Re: V6 supercharged 3.8 into NA MX5
Posted: Wed Sep 05, 2012 7:08 pm
by lizard
another butchered MX5
Re: V6 supercharged 3.8 into NA MX5
Posted: Wed Sep 05, 2012 7:24 pm
by NitroDann
lizard wrote:another butchered MX5
go away.
Re: V6 supercharged 3.8 into NA MX5
Posted: Wed Sep 05, 2012 7:34 pm
by noobee
variety is the spice of life they say!I for one love seeing improvisation and ingenuity.do it with lots of pictures.
should a build thread be in the garage section though?
Mick
Re: V6 supercharged 3.8 into NA MX5
Posted: Wed Sep 05, 2012 11:44 pm
by Beelzeboss
If you're in NSW you won't be able to register this
however I'm looking forward to seeing the pics
Re: V6 supercharged 3.8 into NA MX5
Posted: Wed Sep 05, 2012 11:51 pm
by davekmoore
lizard wrote:another butchered MX5
and your point is?
Re: V6 supercharged 3.8 into NA MX5
Posted: Thu Sep 06, 2012 12:40 am
by Zohxoco
Photos or it didn't happen!
Awesome!
Re: V6 supercharged 3.8 into NA MX5
Posted: Thu Sep 06, 2012 4:05 am
by PaulF
lizard wrote:another butchered MX5
Re: V6 supercharged 3.8 into NA MX5
Posted: Fri Sep 07, 2012 11:59 am
by 93_Clubman
Good on you Steve - great to hear about a different approach to MX5 modding on the forum.
For interested readers it might be worth including your initial thread on this for background:
viewtopic.php?f=29&t=52000
Re: V6 supercharged 3.8 into NA MX5
Posted: Fri Sep 07, 2012 12:19 pm
by Lokiel
I'll be following this out of "morbid curiousity" alone (while I admire ingenuity, I can't understand why you put yourself through all this grief when there are many better alternatives available).
Re: V6 supercharged 3.8 into NA MX5
Posted: Fri Sep 07, 2012 7:40 pm
by Old Dude
lizard wrote:another butchered MX5
They probably said the same thing about the Ace
ace.jpg
until it became the cobra
cobra.jpg
cheers
Dale
Re: V6 supercharged 3.8 into NA MX5
Posted: Sat Sep 08, 2012 1:01 pm
by Aussie Stig
By all accounts the 289 cobra was a sweet car, the 427 an undriveable monster. There is such a thing as too much power.
Re: V6 supercharged 3.8 into NA MX5
Posted: Sat Sep 08, 2012 2:03 pm
by davekmoore
Is the original engine broken and you had a spare free 3.8 in the shed?
Re: V6 supercharged 3.8 into NA MX5
Posted: Sun Sep 09, 2012 8:26 pm
by steverisingsun
My choosing the L67 was due to it being a very compact engine, very reliable even when pushed well up power wise [we see units over 400,000k on original engines]. Weight is similar to the LS1 which has been fitted and worked well. The donor car cost me $1850 of which I have salvaged 1/2 to cars we were repairing. The poor MX5 goes ok, what budget would I need to get into the 12's with a Mazda engine? Using the commode diff, balance should be close to 50/50 as the yanks get close with the Winsor or LS1's. I can't find anyone who has tried this as most yankie 3.8's are FWD, so this is no suprise. Legality is not an issue. Minor mods will see 225kw with 300kw [flywheel] achieved around Oz with stock or near stock internals, thats cheap power!
The old 1.6 is in good nice as well as the gearbox and LSD diff.
Steve
Re: V6 supercharged 3.8 into NA MX5
Posted: Thu Sep 13, 2012 6:33 pm
by wozzah1975
steverisingsun wrote:My choosing the L67 was due to it being a very compact engine, very reliable even when pushed well up power wise [we see units over 400,000k on original engines]. Weight is similar to the LS1 which has been fitted and worked well. The donor car cost me $1850 of which I have salvaged 1/2 to cars we were repairing. The poor MX5 goes ok, what budget would I need to get into the 12's with a Mazda engine? Using the commode diff, balance should be close to 50/50 as the yanks get close with the Winsor or LS1's. I can't find anyone who has tried this as most yankie 3.8's are FWD, so this is no suprise. Legality is not an issue. Minor mods will see 225kw with 300kw [flywheel] achieved around Oz with stock or near stock internals, thats cheap power!
The old 1.6 is in good nice as well as the gearbox and LSD diff.
Steve
Good luck with the conversion, not my cup of tea but it will be definately different.
A few things.
You'll reach the limit of the size of the supercharger well before your quoted power figures, even at a genuine 225kw. 300kw with near stock internals, not likely, definately not reliably, and not cheap. If you've read it on some Holden forum somewhere it's more than likely crap.
Cheers
Woz