GM gen III - Page 5 - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #81  
Old October 21st, 2014, 12:51 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
So, as noted on the GenIV thread I've been looking at the possibility of installing a range box into my drive line and have decided to go with the NP241C based unit from Behemoth Drivetrain.

This is it : http://www.behemothdrivetrain.com/ST...RIVE_KITS.html

Using the NP241C planetary gear set I'll get an extra 2.72:1 reduction in low/low range for an additional 7.9" in drive line length. As I was already replacing the front & rear drive shaft with TW units this isn't really an issue and may mean I can have a common size for both, will have to see how they measure up later. Might need to modify the front 3Link x-member due to the change in drive shaft angle but that's easy done later.

Still undecided on shifting the boxes but NWF have this nice triple stick setup for Stak units that would adapt well :

http://www.northwestfab.com/Stak-3-S...Kit_p_197.html

Or I might make an adaptor bracket to relocate the existing hi/lo shifter forwards the 7.9" and just extend the linkages, again simple fabwork that can be done later.

Overall cost should be around $1200 compared to over $2500 for a Ashcroft crawler box and you get a slightly lower range too, compared to the Ashcrofts 2.69:1 win win
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
Sponsored Links
Advertisement
 
  #82  
Old October 21st, 2014, 02:53 PM
TDI Guy's Avatar
TDI Guy
Status: Offline
Randy
2015 LR4
D-90 Source Vendor
 
Join Date: Sep 2003
Location: NJ
Posts: 4,562
Registry
Cool stuff
__________________
Legend in My Own Mind.
Reply With Quote
  #83  
Old October 21st, 2014, 08:52 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Running the numbers, with 3.54 diffs & 1.667 transfer box I'll have a crawl ratio of 180:1... Nice
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
Sponsored Links
Advertisement
 
  #84  
Old October 21st, 2014, 10:42 PM
nmarkiw's Avatar
nmarkiw
Status: Offline
Nicholas Markiw
1994 NAS D90 LS 5.3L
Member
 
Join Date: Dec 2003
Location: San Diego, CA
Posts: 399
1.6:1 is in high range. 3.321:1 in low range.

Use Ashcroft's calculator
Http://www.Ashcroft-transmissions.co...atio_calc.html
Reply With Quote
  #85  
Old October 21st, 2014, 10:48 PM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 8,989
Registry
Why use a 1.6 with a big engine?
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #86  
Old October 21st, 2014, 10:51 PM
nmarkiw's Avatar
nmarkiw
Status: Offline
Nicholas Markiw
1994 NAS D90 LS 5.3L
Member
 
Join Date: Dec 2003
Location: San Diego, CA
Posts: 399
Quote:
Originally Posted by Red90 View Post
Why use a 1.6 with a big engine?

Right, I'm using a 1.003:1. ...mileage
Reply With Quote
  #87  
Old October 22nd, 2014, 12:56 AM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Quote:
Originally Posted by nmarkiw View Post
1.6:1 is in high range. 3.321:1 in low range.

Use Ashcroft's calculator
Http://www.Ashcroft-transmissions.co...atio_calc.html
I did....
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	70
Size:	73.8 KB
ID:	105406  
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #88  
Old October 22nd, 2014, 01:01 AM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Quote:
Originally Posted by Red90 View Post
Why use a 1.6 with a big engine?
Cause that's what I got and the truck will spend 90% of its time in the bush crawling around power line cuts & logging roads. It's only 5km from one end of town to the other, fuel mileage isn't a concern and the truck will prob only see 5000km a year if it's lucky. Remember for 4 months were knee deep in snow
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #89  
Old October 22nd, 2014, 01:15 AM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Quote:
Originally Posted by JSBriggs View Post
Just be aware of the thrust wear issue from the roller (rather than taper) bearings.

-Jeff
The donor NP241 uses roller brg's through out, where were you thinking ?
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #90  
Old October 22nd, 2014, 10:22 AM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 8,989
Registry
Quote:
Originally Posted by Landy_Andy View Post
Cause that's what I got and the truck will spend 90% of its time in the bush crawling around power line cuts & logging roads. It's only 5km from one end of town to the other, fuel mileage isn't a concern and the truck will prob only see 5000km a year if it's lucky. Remember for 4 months were knee deep in snow
Yes, I know where you live, I'm in Calgary. I'm not sure I understand why you would only want to drive local trails. Regardless, it seems to make little sense to limit the usefulness of the truck when a few dollars will make it able to comfortably cruise on the highway. 1.2 cases are a dime a dozen. Even new gears are cheap.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #91  
Old October 22nd, 2014, 12:09 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Quote:
Originally Posted by Red90 View Post
Yes, I know where you live, I'm in Calgary. I'm not sure I understand why you would only want to drive local trails. Regardless, it seems to make little sense to limit the usefulness of the truck when a few dollars will make it able to comfortably cruise on the highway. 1.2 cases are a dime a dozen. Even new gears are cheap.
Missed your in cow town......

Simple, if I go anywhere out of town to wheel it'll be on a trailer.... I can't afford to be stuck in K'loops or anywhere else with a dead/broke truck. At the end of the day it's a road registered trail truck... if I had the $ I'd be building a full on tube frame rock buggy rather than a LR truggy. But I don't so I work with what I got
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #92  
Old November 5th, 2014, 11:47 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Got my 5.3 today... Came wrapped in a pickup truck
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	167
Size:	108.1 KB
ID:	106467  
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #93  
Old November 6th, 2014, 01:05 PM
D90Overkill's Avatar
D90Overkill
Status: Offline
David Frank
1995 ST #2615
Member
 
Join Date: Jan 2008
Location: Napa, CA. United States
Posts: 4,845
Registry
Quote:
Originally Posted by Landy_Andy View Post
Got my 5.3 today... Came wrapped in a pickup truck
Sweet! And maybe you can make a buck back chopping up the wrapper! And just think of how much fun it's going to be custom building a snorkel for the massive mouth of the Vortec! ;-)
Reply With Quote
  #94  
Old November 6th, 2014, 03:48 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Quote:
Originally Posted by D90Overkill View Post
Sweet! And maybe you can make a buck back chopping up the wrapper! And just think of how much fun it's going to be custom building a snorkel for the massive mouth of the Vortec! ;-)
Doubt it... generally have to pay to get the scrap hauled away here

------ Follow up post added November 6th, 2014 01:53 PM ------

Quote:
Originally Posted by JSBriggs View Post
Its nice to get everything. Brackets clips plugs etc.

-Jeff
Yer, just a shame allot of it isn't much use really.... it's been through a couple of guys round town already so the transfer box is gone & the interior has mostly been stripped out already but I only paid $300 for the truck (including the flatbed delivery) so can't complain too much

Bugger about the trans box.... as it was a NP241C and that'd have saved a few $ on the crawler box
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #95  
Old November 9th, 2014, 03:43 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Time to get this engine pulled out !









Having the correct lifting brackets that I scored on Ebay for $50 made things real easy once I'd lifted it forwards enough to clear the firewall.

Next step will be a freshen up of the block and then time to drop it into the D100, total cost so far under $400
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #96  
Old November 9th, 2014, 07:02 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Useful info if your DIY'ing an exhaust system - http://forums.holley.com/entry.php?4...S-Engine-Swaps
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #97  
Old November 12th, 2014, 04:39 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Great tech on pruning out the 5.3 engine harness here - https://www.facebook.com/media/set/?...5211824&type=3

Check out Brandon's webpage for lots of great info - http://lt1swap.com/index.htm
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #98  
Old November 12th, 2014, 11:04 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Thinking ahead, this exhaust box would make the system sound sweet !
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	131
Size:	78.8 KB
ID:	106884  
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #99  
Old November 12th, 2014, 11:19 PM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Started the tear down on the 5.3, bores look mint with crosshatching in them all. Not bad for 112,000m so will leave the pistons in the bores & just check for spun bearings next. I did notice that some of the pushrods had a rough end where they sat in the rocker bucket, think they'll need to be replaced. Head looks clean & will get hot tanked then relap the valves & new valve stem seals.
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	147
Size:	124.7 KB
ID:	106885  
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
  #100  
Old November 18th, 2014, 12:14 AM
Landy_Andy's Avatar
Landy_Andy
Status: Offline
Andy
1999 D2, 1985 D100 Truggy & 1951 S1
Member
 
Join Date: Jul 2009
Location: Revelstoke, BC, Canada
Posts: 1,392
Starting to look at my fuel system for the 5.3 install, currently have duel saddle tanks with the early RaRo return type in-tank pumps & electric changeover valve. Looking at the pump specs it appears the ~35psi isn't up to the task. Was thinking of installing a swirl pot and inline pump to feed the engine.... Anyone gone this route ?
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	121
Size:	58.4 KB
ID:	107084  
__________________
D100 5.3 LM7 Gen III powered truggy under construction....
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Iphone 8GB 2nd Gen For Sale Rugbier The Flea Market 28 December 16th, 2009 08:51 PM
FS: 1st gen 8gig iPod Touch mpodgorski The Flea Market 7 December 16th, 2009 06:03 PM
Misc parts (D1 and gen purpose) Ray_G For Sale - Parts 5 October 5th, 2008 08:11 AM
FS: 30g iPod Video & 8g iPhone 1st Gen mpodgorski The Flea Market 3 August 7th, 2008 07:37 AM
New here. A gen question re: Rovers Emerson00 Misc. Chit-Chat 26 December 20th, 2006 10:53 AM


All times are GMT -5. The time now is 04:40 AM.


Copyright