GM Gen 4 conversion including LS - Page 33 - Defender Source
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  #641  
Old January 22nd, 2015, 11:52 AM
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Justin
87 ROW build in progress
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Originally Posted by phoenix37 View Post
trust me its worth the wait and you are well on your way… My NAS 110 always felt like a slug…this thing rips! time to invest in some better brakes!
Sounds great! Enjoy that beast!
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  #642  
Old January 22nd, 2015, 11:57 AM
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Never happened without pic's & video
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D100 5.3 LM7 Gen III powered truggy under construction....
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  #643  
Old January 22nd, 2015, 12:05 PM
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Originally Posted by Landy_Andy View Post
Never happened without pic's & video
soon enough.. need to button everything up now that i know i wont have to tear it down again .. running without a trans tunnel for example
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  #644  
Old January 27th, 2015, 01:37 PM
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John B.
1991 Defender 90, 200TDI
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Originally Posted by Red90 View Post
What is "normally" done to proper size the final drive.... Work out the power required to move the vehicle versus speed. Find out the wheel power available versus speed. Decide on a maximum speed you want to be able to maintain, on the flat, with no wind without dropping down a gear. Plot and adjust final drive to suit. This gives you the best mileage.

I suspect with this engine, you can't go high enough on the gearing.
So I had played around with a curve for the 2.5 NA yesterday and thought, why not plug in the GM engine...... So with the 1:1 high range, you will be able to do 100 mph before needing to shift down.... Top speed in 4th around 130 mph.

edit: added the 6.2, LS3. Say 105 mph before shifting down and 140 mph top speed.
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  #645  
Old January 27th, 2015, 04:01 PM
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Can you do the LC9 stock diff gears 1.4 TC and 34" tires
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  #646  
Old January 27th, 2015, 04:16 PM
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Can you do the LC9 stock diff gears 1.4 TC and 34" tires
Sure, tomorrow as the spreadsheet is at work. Lift or roof rack that will cause more drag?
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  #647  
Old January 27th, 2015, 05:09 PM
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2" OME lift but that is about it
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  #648  
Old January 28th, 2015, 08:59 AM
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Originally Posted by dave_lucas View Post
Can you do the LC9 stock diff gears 1.4 TC and 34" tires
Here you go.
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  #649  
Old January 28th, 2015, 09:53 AM
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so 260+ HP needed to get a defender to 120 mph? Ouch Brick-Aero hurts.
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  #650  
Old January 28th, 2015, 10:05 AM
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so 260+ HP needed to get a defender to 120 mph? Ouch Brick-Aero hurts.
That is wheel power as well. I'm assuming 15% drivetrain loss. 320 engine HP.

But high speed is not the goal here. Good acceleration and power for climbing are.
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  #651  
Old January 28th, 2015, 11:19 AM
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Originally Posted by Red90 View Post
That is wheel power as well. I'm assuming 15% drivetrain loss. 320 engine HP.

But high speed is not the goal here. Good acceleration and power for climbing are.
Correct…as we'll as towing… be nice to tow the boat up a hill without feeling like I'm going to start rolling backwards!
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  #652  
Old January 29th, 2015, 06:13 AM
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Talking 6.2.......6l80e




It has arrived!!!!! Now poor Rob from http://www.SWRAutomotive.net has to dig through the 1000 boxes I had sent him over the past 2 months.....
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  #653  
Old January 29th, 2015, 04:25 PM
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Nicholas Markiw
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Latest batch of engine mounts arrived.
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  #654  
Old January 30th, 2015, 01:49 PM
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G
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Awesome news
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  #655  
Old January 30th, 2015, 02:24 PM
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Originally Posted by Landy_Andy View Post
Never happened without pic's & video
Here you go Andy… Used to sputter trying to get up this bridge and now it pulls like a freight train…
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  #656  
Old January 30th, 2015, 02:53 PM
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Originally Posted by phoenix37 View Post
Here you go Andy… Used to sputter trying to get up this bridge and now it pulls like a freight train…
Nice..... great to see it up & running !
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  #657  
Old February 2nd, 2015, 08:57 PM
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Scott Striglos
2xRRC 2xD90 2xD110 Series II, IIA
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Originally Posted by phoenix37 View Post
Here you go Andy… Used to sputter trying to get up this bridge and now it pulls like a freight train…
Really looking forward to this. Up hill is a great demo of the power. Radiator is the last piece we are waiting for to make it around the next corner on our build.
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  #658  
Old February 18th, 2015, 04:21 PM
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Has anyone looked into what's required to water-proof these engines, or improve their fording depth? I know the obvious stuff like copious amounts of dielectric grease, mount computers high as possible, etc. But, more specifically, issues associated with this motor swap.
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  #659  
Old February 18th, 2015, 04:47 PM
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Originally Posted by TMWTP View Post
Has anyone looked into what's required to water-proof these engines, or improve their fording depth? I know the obvious stuff like copious amounts of dielectric grease, mount computers high as possible, etc. But, more specifically, issues associated with this motor swap.
I think you've answered your own question there, the quality of connectors used on both the sensors, coilpacks & ECU are far superior to those used on older LR Lucas systems. They all have silicon seals between the connector halves & on the wire entry too. Keep the water out of those with some grease, your air intake pipe work sealed & above water and you should be golden. Switch out the dipstick to a flexible sealed cap type for some extra security and make sure any breathers are well up out the way.

Check out what some of the mud boggers do with LS motors....
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  #660  
Old March 1st, 2015, 12:04 PM
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Out of Stock

Sold the last adapter yesterday. That makes 21.
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