v6 swap options
Hey guys. It's been awhile since I've had much to say in Miata-land since I sold my turbo'd Miata...which was since driven into a brick wall. :(
I now own an '04 RX-8. LOVE the car. HATE the engine. (Sorry rotory guys) I've been considering v6 options and it dawned on me, don't alot of Miata guys yern for a v6? Well...I found one with bolt-on RWD options. It's VERY similar to the KL but by golly there's a transmission that fits it. :D Who's interested? Should I start a thread on it here or are there enough swap threads going? |
There are not that many v6 miatas. Most don't beat around the bush and go straight for 8
|
Same thing goes for the RX8. They do LSx or xUZ swaps.
I'd imagine there isn't alot of v6 Miatas because there arn't alot of good v6s out there with RWD options ...until now. mwahaha |
TurboTimmah is building a KL beast. Check out his thread
|
https://www.miataturbo.net/cars-sale...2412500-67451/
CodingParadox has a KL Miata as well, no idea if it sold or not. |
Originally Posted by 18psi
(Post 963290)
TurboTimmah is building a KL beast. Check out his thread
|
10 Attachment(s)
Engine in question... Isuzu 6VD1 (3.2) and 6VE1 (3.4). Aluminum block, DOHC, 75deg V (short height), forged rods, cast crank, open deck, and COP ignition. Built by Honda. They can be found everywhere. Troopers, Amigos, Rodeos, and Honda Passport as well as various Isuzu and Holden trucks. Good news is, there's bolt-on options to bolt a Toyota Supra (r154 ect) transmission to it. It has the GM 60-deg bolt pattern. Hello options.
Check out the 6-bolt mains and main bearing support plate with the oil rail in it. The forged rods have oil squirters also (like the SR20). |
very interesting. cast crank kinda sucks if you wanna make a ton of torque. but it will still probably be a beast.
has anything else like this been done or will you be the 1st? |
4 Attachment(s)
Originally Posted by 18psi
(Post 963297)
very interesting. cast crank kinda sucks if you wanna make a ton of torque. but it will still probably be a beast.
has anything else like this been done or will you be the 1st? https://www.miataturbo.net/attachmen...1&d=1356749045 https://www.miataturbo.net/attachmen...1&d=1356749054 |
what do you plan to control it with?
Im sure MS can do it (and many others) but won't you be completely alone in setting it up and tuning it? |
2 Attachment(s)
Yes I would be. I'll use the electronics that ran that engine before. The problem I'll have is getting the RX-8s canbus cluster working. There are chip swaps available for it so it's unlikely it can be reflashed through the OBDII port. Nothing a piggyback can't solve. Depending on the year ('92-95 and '96-04) I can get cable or drive-by-wire electronics.
I really wish I had an MX-5 now. This would be a cakewalk. Another interesting tid-bit. The image below is a production powerplant for a plane using the Isuzu v6. It's supercharged and rated at 350hp. Weight (INCLUDING the prop reduction, supercharger, and alternator) is stated at 352.74lb. The reduction itself is stated 66.14lb. That leaves 286.6lb leaf for an impressively light 350hp supercharged v6. https://www.miataturbo.net/attachmen...1&d=1356750021 |
Lets put one in my Fiat if I get bored next year.
|
Originally Posted by Splitime
(Post 963304)
Lets put one in my Fiat if I get bored next year.
Some Toyota transmission info... R150 - A 2WD transmission found in many Toyota trucks. Ratios: * First Gear: 3.830:1 * Second Gear: 2.062:1 * Third Gear: 1.436:1 * Fourth Gear: 1.00:1 * Fifth Gear: 0.838:1 R150F - A 4WD transmission found in many Toyota trucks. Ratios: * First Gear: 3.830:1 * Second Gear: 2.062:1 * Third Gear: 1.436:1 * Fourth Gear: 1.00:1 * Fifth Gear: 0.838:1 R151F - A 4WD transmission found in many Toyota trucks. Ratios: * First Gear: 4.313:1 * Second Gear: 2.330:1 * Third Gear: 1.436:1 * Fourth Gear: 1.00:1 * Fifth Gear: 0.838:1 R154 - This transmission is a robust 5-speed transmission found in the 1987-1992 MKIII Supra Turbo. Ratios: * First Gear: 3.250:1 * Second Gear: 1.955:1 * Third Gear: 1.310:1 * Fourth Gear: 1.00:1 * Fifth Gear: 0.753:1 V160 - Toyota MKIV Supra 6-speed 1- 3.827 2- 2.360 3- 1.685 4- 1.312 5- 1.000 6- 0.793 But wait there's more! Jeep AX15 and NV3550 Isuzu AR5 (originally bolted to the Isuzu 3.2L and 3.5L v6s) Jeep AX5 Toyota W55, W56, W57 and W58 The W-series Toyota 5-speeds share a common face pattern on the case. Any '88-99 Jeep 2.5L bellhousing (NOT Dakota) will bolt a Toyota W series transmission to a 60 degree GM bolt pattern. |
I'm interested to see your results. I've always wanted to do V6 but most suck or are unpractical right now (Ford's new 3.5L ecoboost engine:drool:). I looked a little bit at Isuzu engines as I think the mazda KL is very similar or something, don't quote me though. I like all the transmission options too. That's another annoying thing about the KL swap.
|
3 Attachment(s)
Here's some interesting figures I calculated. I'm pretty sure I didn't screw this up. :)
Calculated rear wheel lb-ft torque. Gear----Isuzu v6 w/ Toyota R154 (4.10 r&p)----Stock '95 Miata (4.10 r&p) 1-------------3607---------------------------------------1505 2-------------2170---------------------------------------868 3-------------1455---------------------------------------635 4-------------1110---------------------------------------475.6 5-------------835----------------------------------------387 205/60/15. 5th gear. Equal 65mph@2850rpm Red is Miata, Blue is v6+R154 (4th gear is equal). It should feel very close to the stock Miata gears. Shift points are very close to the same except for that nice .753 overdrive. :) https://www.miataturbo.net/attachmen...1&d=1356758942 |
4 Attachment(s)
Originally Posted by gorillazfan1023
(Post 963319)
I'm interested to see your results. I've always wanted to do V6 but most suck or are unpractical right now (Ford's new 3.5L ecoboost engine:drool:). I looked a little bit at Isuzu engines as I think the mazda KL is very similar or something, don't quote me though. I like all the transmission options too. That's another annoying thing about the KL swap.
https://www.miataturbo.net/attachmen...1&d=1356759442 https://www.miataturbo.net/attachmen...1&d=1356759476 |
V8 > V6
If you're doing a swap like that. Why not go all the way... |
Originally Posted by mikeboldt
(Post 963351)
V8 > V6
If you're doing a swap like that. Why not go all the way... |
I wouldn't be mentioning weight as an advantage until you see the engine, with the necessary ancillaries on a scale.
The supercharger is another 25lbs, which would imply the engine itself is lighter then the alloy Honda 4-bangers. I dunno, but general physics tells me that 2 extra con-rods and pistons + 4 added valves + 2 extra intake and exhaust manifold runners etc do not usually add up to a nett weight saving. |
Originally Posted by mikeboldt
(Post 963351)
V8 > V6
If you're doing a swap like that. Why not go all the way... |
All times are GMT -4. The time now is 01:35 PM. |
© 2024 MH Sub I, LLC dba Internet Brands