Close

Page 4 of 5 FirstFirst ... 2345 LastLast
Results 31 to 40 of 41
  1. #31
    Meme King WJCO's Avatar
    Join Date
    Sep 2015
    Location
    Colorado
    Posts
    15,858
    Quote Originally Posted by Benito View Post
    I think that at that point our jeeps are going to be free from any sort of emissions crap and we'll be able to swap in anything we want!
    I sure hope that's the case. But I see the future as more and more control in the name of the environment.

  2. #32
    Knows a Thing or Two 13_gecko_rubi's Avatar
    Join Date
    Jan 2014
    Location
    Commerce, MI
    Posts
    844
    Quote Originally Posted by WJCO View Post
    I sure hope that's the case. But I see the future as more and more control in the name of the environment.
    Sadly this is more likely.

    Won't we ask have flying cars by then? Lol

  3. #33
    Knows a Thing or Two Benito's Avatar
    Join Date
    May 2013
    Location
    New Mexico/Texas
    Posts
    710
    Quote Originally Posted by WJCO View Post
    I sure hope that's the case. But I see the future as more and more control in the name of the environment.
    With that said, let's be realistic, our jeeps won't be DD, and more than likely there will be better motors that will make more power and be more "environmentally friendly" than what we have now, so an LS swap then will be like a Carbureted GM 350 now!

  4. #34
    Advertiser
    Join Date
    May 2013
    Location
    LAS VEFAS
    Posts
    60
    Quote Originally Posted by highoctane View Post
    The info in this tread is great! Motech if I were to look for a L83 5.3 engine, what year/make/model vehicle should I get one out of? I know it needs to be '15 or newer if I want it to pass emissions (if I were to ever move out of AZ I'd want that). Pretty much all of the engines I've looked at on Ebay are out of Chevy/GMC trucks and Chevy Tahoes. Price is MUCH cheaper than I thought it would be for a low mileage L83. The L86 is a good bit more, but the power numbers on the L83 look great. On the L83, it gets a power bump on E85 fuel of about 30 hp and tq. Would the Gen V swaps you do keep that flex fuel ability when swapped into a JK? Is the 8L80 a thing you are for sure doing? Would the 8L80 be a better trans in a heavy JK than the 6L80? I live in northern AZ (lots of steep mount climbs on the highway) and imagine the extra gears would be an advantage. The slightly lower 1st gear I imagine would be nice for crawling.
    We are currently doing an L83 and L86 swap. The prices of the Gen V engines are finally starting to drop, and in the case of the 5.3 drop fast. We went through the same thing with the Gen IV engines when they were released, the yards held the prices up for a couple years until the supply was greater than demand. I'll try and get some pictures up soon.

    A few interesting points with the Gen V swap:

    The Gen V engines run aggressive AFM(4 cylinder mode). As with any variable displacement system when running on fewer cylinders intake vacuum drops. AFM/DOD's primary benefit is reducing pumping losses under part throttle conditions, hence less vacuum for braking. Both the LT and Pentstar engines run brake booster pressure sensors, but unlike the Pentstar's electric vacuum pump the Gen V engines run a belt driven vacuum pump. This means sufficient vacuum will be available at all times, even at low idle so you can stop 40's.

    With aggressive AFM redesigned the motor mounts. When in 4 cylinder mode vibrations can be a problem. We have always run the proper hydraulic motor mounts with our conversions and now we are gearing up for the larger Gen V liquid filled mount.

    The Gen V engines run electric power steering so there is no power steering pump. We are designing billet brackets for all our swaps and have purchased a VMC and Turning center so we can produce them in house. The new brackets require no alignment and will support the factory JK accessories, lines and hoses. One advantage is no custom parts to search for, they are available at your local dealer. Anyway we will support the OE PS pump as well as PSC and the other aftermarket PS pumps if you have hydraulics.

    We are supporting the 8l80 transmission. The low and high gears of the 8l80 are similar to the 6l80 so I have to believe it is a move for efficiency. I'm not sold on the 8 speed transmission yet; I was disappointed with the Chrysler 8 speed I drove it never seemed happy in any gear and was always shifting. Small displacement engines and diesels like more gears to keep them in their optimal power band, but with a large V8 with lots of torque I feel the 8 speed is less useful. In a 200 mph Corvette 8 speeds make sense, in a 90 mph JK not so much. We will see after I do my testing the mpg increase may be worth it.

    With the Gen IV engine I do not recommend the 5.3 for heavy JK's running in the mountains. The 5.3 is only 1.5 liters larger than the 3.8 and does not have the inherent torque to move the the weight as efficiently as the 6.0 and 6.2. The 5.3 will go into open loop(or into performance enrichment) to pull a hill where the larger engines will stay in closed loop running leaner in a higher gear. The Gen V engines may change that because with direct injection, contentious VVT and higher compression more torque will be available due to the higher cylinder pressures.

    Gen IV and up engines use virtual flex fuel technology. Unlike the old days they do not run an expensive hard FF sensor. Each fuel has it's stoichiometric point, at stoich the oxygen content is about 1.5%. You breathe about 21% oxygen so primary air(air into the intake) goes from 21 to 1.5% when it exits the exhaust. Narrow band oxygen sensors can precisely determine one O2 level, and that is 1.5%. Wide-band O2's are another story. So by the OS looking at the O2 content in the exhaust it can determine the percentage of alcohol in the fuel. Stoich for pure gas is about 14.7:1 but most of us are running 10-15% alcohol so stoich for most of us is about 14.2:1. This means if you have a FF engine it will run on FF. After 2010 almost all LS's went to FF capability. FF engines, especially engines like the LC8 6.0(gas, alcohol, natural gas) run non corrosive components and hardware as well as updated heads to handle the corrosive nature of the fuel. Unfortunately North American JK's are not set up for FF and the fuel system components may be damaged if you run it. Chrysler did sell FF JK's in Europe, they have a different color fuel cap and assembly.

  5. #35
    Advertiser
    Join Date
    May 2013
    Location
    LAS VEFAS
    Posts
    60
    Quote Originally Posted by GraniteCrystal View Post
    Here's my plan, curious to hear your thoughts. I have a 2014 JKUR with 38k miles on it. I'm doing about 10k miles a year so let's say it lasts me till it hits 200k miles in 16 years. At that point the JL is well retired, people are driving J_ and I'm driving something that's looking pretty old school but want to keep forever. Still possible to do an LS swap at that point or will it be impossible to find the right engine, parts, and shop to do it?
    We might be installing Hydrogen engines at that point lol. We recently did a retro swap using a early 60's 283 small block so anything is possible.

  6. #36
    Advertiser
    Join Date
    May 2013
    Location
    LAS VEFAS
    Posts
    60
    Quote Originally Posted by WJCO View Post
    I sure hope that's the case. But I see the future as more and more control in the name of the environment.
    I have been a level 2(2G) State emission technician and inspector going on 20 years, and I worked in California. I finally was able to talk with a California Referee supervisor yesterday at length, and things are looking better. We have over 25 LS JK's certified in California now and I heard rumors California has lifted the 3/8 year waiting period on modifications. The Supervisor confirmed it is true, there is no more waiting period so we can now legally swap 16's. California is requiring converted vehicles have zero monitors unset and as usual all the hardware and software from the donor vehicle brought over plus pass inspection.

    This is not an issue for us as we run pure operating systems with all monitors, enhanced DTC's, Mode 6 data and drive cycles supported. I have had a number of guys come in with other swaps that had their tags pulled because the emission labs are stepping up enforcement on monitors running and setting; so just setting the monitors to not supported no longer works.

    This is good news and will make the swap available to many customers in CA that have been waiting. And if history repeats itself the other states will follow California's lead.

  7. #37
    Administrator wayoflife's Avatar
    Join Date
    Oct 2011
    Location
    Carson City, NV
    Posts
    40,254
    Quote Originally Posted by MOTECH View Post
    I have been a level 2(2G) State emission technician and inspector going on 20 years, and I worked in California. I finally was able to talk with a California Referee supervisor yesterday at length, and things are looking better. We have over 25 LS JK's certified in California now and I heard rumors California has lifted the 3/8 year waiting period on modifications. The Supervisor confirmed it is true, there is no more waiting period so we can now legally swap 16's. California is requiring converted vehicles have zero monitors unset and as usual all the hardware and software from the donor vehicle brought over plus pass inspection.

    This is not an issue for us as we run pure operating systems with all monitors, enhanced DTC's, Mode 6 data and drive cycles supported. I have had a number of guys come in with other swaps that had their tags pulled because the emission labs are stepping up enforcement on monitors running and setting; so just setting the monitors to not supported no longer works.

    This is good news and will make the swap available to many customers in CA that have been waiting. And if history repeats itself the other states will follow California's lead.
    Wow! Not that I'd need it anymore but this is great news for all the guys in CA that are wanting to do an LS swap. Thanks for posting this up

  8. #38
    Nothing but a Thing HighwayTrout's Avatar
    Join Date
    Dec 2013
    Location
    California
    Posts
    1,679
    So awesome!
    This is exactly why an LS swap was never even a thought for me. I didn't want to deal with the headaches of smoging a motor swapped vehicle.
    en hopup veritas

  9. #39
    Advertiser
    Join Date
    May 2013
    Location
    LAS VEFAS
    Posts
    60
    Here are some pictures of the Gen V 6.2 before we drop the body. You can see the belt driven vacuum pump which should give us adequate braking even at idle. Looks like we can now run the full size truck exhaust manifolds.

    IMG_20160802_102332.jpgIMG_20160802_102243.jpg
    Attached Images Attached Images

  10. #40
    Fresh Catch
    Join Date
    May 2017
    Location
    Houston
    Posts
    19
    Sorry to dig up an old thread, but a year later - what is your recommendation for a low hassle middle of the road swap? 6.2L LS3 2010 and newer with a 6L80?



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •