Modern engine Swaps? - RX7Club.com - Mazda RX7 Forum

Other Engine Conversions - non V-8 Discussion of non-rotary engines, exc V-8's, in a car originally powered by a Rotary Engine.

Modern engine Swaps?

Reply

 
 
 
Old 10-01-18, 12:41 PM
  #1  
Ill
Pro Graphic designer
Thread Starter
 
Join Date: Jul 2016
Location: Marine
Posts: 37
Thanked 0 Times in 0 Posts
Modern engine Swaps?

It's 2018 and im sure there must be hidden gems people still haven't tried out yet.
1JZs, 2JZ, etc are quite heavy and old engines. Since it's a fairly common swap on majority of cars, the prices too have gone up and quite difficult to get one locally!
Are there any new reliable light weight turbo engines swaps done that make good power? Preferably JDM?
Ill is offline  
Reply With Quote
Old 10-01-18, 01:08 PM
  #2  
Playing Well
iTrader: (19)
 
Natey's Avatar
 
Join Date: Aug 2004
Location: Santa Cruz
Posts: 3,878
Thanked 53 Times in 43 Posts
Throw enough money at it and you can do pretty much anything. Have you seen Mad Mike's 4 rotor FD with the RX-3 front?

Aventador to FD. Get er done.
Natey is online now  
Reply With Quote
Old 10-01-18, 01:20 PM
  #3  
Rotary Enthusiast
iTrader: (9)
 
$lacker's Avatar
 
Join Date: Mar 2010
Location: Canada
Posts: 1,049
Thanked 8 Times in 7 Posts
A built Honda K-series engine would probably work well
$lacker is offline  
Reply With Quote
Old 10-01-18, 08:45 PM
  #4  
Very Stable Genius
iTrader: (1)
 
WANKfactor's Avatar
 
Join Date: May 2011
Location: omnipresent
Posts: 1,189
Thanked 60 Times in 53 Posts
Theres a plethora of alloy block v6's that get close to 100hp per liter N/A these days and would fit the bill in terms of low weight and packaging.
WANKfactor is offline  
Reply With Quote
Old 10-11-18, 11:49 AM
  #5  
malignant narcissist
iTrader: (2)
 
diabolical1's Avatar
 
Join Date: Feb 2002
Location: FL
Posts: 9,333
Thanked 41 Times in 38 Posts
Where are we drawing the line to define "modern"?

Anyway, with the RB gone, I'm a huge fan of the Nissan VR38. I like the VQs, too, but the VR is a monster! I don't know how light they are, but I also don't much care.

I really dig the Honda J-series engines.

I would like to get some research done on the new Toyota V6s, but I have not made the time to see what they're up to these days.
diabolical1 is online now  
Reply With Quote
Old 10-11-18, 04:50 PM
  #6  
Ill
Pro Graphic designer
Thread Starter
 
Join Date: Jul 2016
Location: Marine
Posts: 37
Thanked 0 Times in 0 Posts
Okay i should've shortlisted it.
Engines that weigh as much as the 13b (to keep the 50:50 weight distribution) , Reliable, makes reasonable power (on par with the rotary or more), does better miles per gallon than the rotary.
I love the idea of the K-series but i think the cost for forced induction, adapter plates, etc will be quite expensive.
Ill is offline  
Reply With Quote
Old 10-15-18, 10:43 AM
  #7  
Brap Brap, Fap Fap
iTrader: (7)
 
Shainiac's Avatar
 
Join Date: Jun 2006
Location: Lyme, CT
Posts: 1,462
Thanked 7 Times in 7 Posts
I think the most complicated and usually expensive hurdle with swapping modern drivetrain is the gearbox. More and more new cars are transverse and automatic. One of the nice things about the LS swaps is that you can find manual-shift robust gear boxes relatively easily (although more expensive than 5 years ago). Also, the engine controls on modern engines is MUCH more complicated and more integrated into the body wiring than older cars. Extensive use of CANbus and proprietary CAN language make it more difficult. And with popularity of direct injection make it more difficult finding (and affording) aftermarket ECUs to control DI engines.
Shainiac is offline  
Reply With Quote
Old 10-15-18, 11:52 AM
  #8  
Ill
Pro Graphic designer
Thread Starter
 
Join Date: Jul 2016
Location: Marine
Posts: 37
Thanked 0 Times in 0 Posts
Im actually interested in a K24 Swap. Any thoughts as to what's needed to mount it to the FD3S gearbox?
I've seen it on many RX8's but only a couple or two on the FD and no one has bothered to document it.
Ill is offline  
Reply With Quote
Old 10-15-18, 04:17 PM
  #9  
malignant narcissist
iTrader: (2)
 
diabolical1's Avatar
 
Join Date: Feb 2002
Location: FL
Posts: 9,333
Thanked 41 Times in 38 Posts
Have you looked at the S2000 box? I know they came with an F-series engine (not the old Accord ones), but they supposedly had some similarities to the K-series. I don't know if the tranny bolt pattern is one of those similarities, but that's where I would start. Outside of that, you'll need to start looking at adapter plates.
diabolical1 is online now  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GregFD3S
RX-7 Audio/Visual Lounge
9
02-27-07 06:27 PM
rxtasy3
Old School and Other Rotary
3
06-12-06 11:18 PM
rxtasy3
1st Generation Specific (1979-1985)
20
06-02-06 09:24 PM
rxtasy3
RX-7 Audio/Visual Lounge
5
05-31-06 01:48 PM


Thread Tools
Search this Thread
Quick Reply: Modern engine Swaps?


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: