Band Aid for 4.0 - Page 2 - Defender Source
Defender Source  

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


Reply
 
Thread Tools
  #21  
Old December 10th, 2013, 01:09 PM
Bill Larson's Avatar
Bill Larson
Status: Offline
Bill Larson
97 D90 SW
Member
 
Join Date: Jul 2010
Location: AUS
Posts: 6,563
Sam, once you decide what you're going to finally do with the engine have you thought any thing about fuel? I'm thinking of getting rid of the fuel injection when I do mine. I need to do a lot more research...
Reply With Quote
Sponsored Links
Advertisement
 
  #22  
Old December 10th, 2013, 02:42 PM
SMac's Avatar
SMac
Status: Offline
Sam
NAS 97 D90 SW
Member
 
Join Date: Oct 2007
Location: Idaho
Posts: 1,766
Quote:
Originally Posted by Bill Larson View Post
Sam, once you decide what you're going to finally do with the engine have you thought any thing about fuel? I'm thinking of getting rid of the fuel injection when I do mine. I need to do a lot more research...
To be honest, no. If I stay Rover, I was just planning on a uprated 4.6 with Bosch flow matched injectors, chip, and uprated radiator. So minimal changes if a Rover stays under the hood. Ive read briefly about a Projection system from Holley I believe, but I don't know how much hacking there would be or performance gain.

I'll be getting out of the service soon and moving back to Idaho, so I would like to keep fuel injection to run the constant elevation changes, big hills, and a wide range of outside temperatures.

Other than the benefit of less dependance on electronics, I am not mechanically savvy enough to know the benefit of a carb over today's FI systems. Perhaps flat landers such as yourself would benefit from carb?
Reply With Quote
  #23  
Old December 10th, 2013, 03:03 PM
Bill Larson's Avatar
Bill Larson
Status: Offline
Bill Larson
97 D90 SW
Member
 
Join Date: Jul 2010
Location: AUS
Posts: 6,563
Quote:
Originally Posted by SMac View Post
To be honest, no. If I stay Rover, I was just planning on a uprated 4.6 with Bosch flow matched injectors, chip, and uprated radiator. So minimal changes if a Rover stays under the hood. Ive read briefly about a Projection system from Holley I believe, but I don't know how much hacking there would be or performance gain.

I'll be getting out of the service soon and moving back to Idaho, so I would like to keep fuel injection to run the constant elevation changes, big hills, and a wide range of outside temperatures.

Other than the benefit of less dependence on electronics, I am not mechanically savvy enough to know the benefit of a carb over today's FI systems. Perhaps flat landers such as yourself would benefit from carb?
I deal with a lot of elevation changes also but like the "less electronics" aspect...although it's a bigger can of worms. Normally I'm at 700' ASL but have done 14k ASL I do worry about all of that but wouldn't mind learning more. There are plenty of threads here that cover that, carb v. injectors. The PO of my 97 D90 have everything configured for Co. elevations.

Many considerations before I do the engine upgrade.
Reply With Quote
Sponsored Links
Advertisement
 
  #24  
Old December 10th, 2013, 03:50 PM
robertf
Status: Offline
Robert F
1995 Discovery
Member
 
Join Date: Feb 2012
Location: Dallas, TX USA
Posts: 138
Quote:
Originally Posted by Bill Larson View Post
The PO of my 97 D90 have everything configured for Co. elevations.
How? I am only aware of 1 adjustment that can be made to a 97 4.0 (base idle screw)
Reply With Quote
  #25  
Old December 10th, 2013, 04:27 PM
Bill Larson's Avatar
Bill Larson
Status: Offline
Bill Larson
97 D90 SW
Member
 
Join Date: Jul 2010
Location: AUS
Posts: 6,563
Quote:
Originally Posted by robertf View Post
How? I am only aware of 1 adjustment that can be made to a 97 4.0 (base idle screw)
Bought it from Oxcart (Mark) in Co. he up graded the engine and tweaked the ECU. Search his threads going back 2 or 3 years ago...
Reply With Quote
  #26  
Old January 12th, 2014, 02:05 AM
SMac's Avatar
SMac
Status: Offline
Sam
NAS 97 D90 SW
Member
 
Join Date: Oct 2007
Location: Idaho
Posts: 1,766
Call me crazy but I dumped some Marvel Mystery Oil in her over Christmas thinking there was nothing to lose except $8... Ticking has not reappeared over 350 miles since I did. Not saying it was or wasn't the Marvel, but Ive yet to clean out the oil pickup or change oil since this thread. Hmmmm...
Reply With Quote
  #27  
Old January 12th, 2014, 11:44 AM
1of40's Avatar
1of40
Status: Offline
1of40
NAS 97SW & 83 One Ten Tdi
Member
 
Join Date: Dec 2003
Location: Potomac Falls & Wintergreen, Virginia
Posts: 6,080
Registry
I wish I'd started a steady regiment of sea foam or ATF early on. I bought my truck with about 30k original miles 90k miles ago. I have no ticking or compression or oil loss problems yet but I'd be concerned about working loose 17 years of build up at this point. If the engine goes, it goes and I'll likely replace it with a 4.0 rebuild.

Clay
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #28  
Old January 12th, 2014, 01:02 PM
down_shift's Avatar
down_shift
Status: Offline
Russell
94' D90 ST & 06' LR3
Member
 
Join Date: Sep 2011
Location: Leesburg, VA
Posts: 4,118
Registry
16 hours into a 25.5 hour race our head starting making all kinds of ugly noise. So loud you could hear it over the open exhaust and power was down (3 seconds per lap). We were all set to keep it on the track until it grenaded (225k on it and well over 100 hrs of racing).
Then guy from a few pits down tossed us a bottle of Lucas Oil Stabilizer. What did we have to loose? Radioed the car in, dumped the additive in with the Mobil 1 and got back out on the track. Within one lap power was restored and it sounded silky smooth again. It was the last race for the car and motor so didn't bother do any forensics. But that stuff obviously freed up some blocked oil passage so the lifter(s) stopped banging on the cam lobe(s). Perhaps it's wetting properties came into play as well.
Reply With Quote
  #29  
Old January 12th, 2014, 01:21 PM
SMac's Avatar
SMac
Status: Offline
Sam
NAS 97 D90 SW
Member
 
Join Date: Oct 2007
Location: Idaho
Posts: 1,766
Hmmm indeed. The guys over at bobistheoilguy seem to be all about it. Im going to waste some more when I do my next oil change, and also in the LR3.

------ Follow up post added January 12th, 2014 11:21 AM ------

Quote:
Originally Posted by down_shift View Post
16 hours into a 25.5 hour race our head starting making all kinds of ugly noise. So loud you could hear it over the open exhaust and power was down (3 seconds per lap). We were all set to keep it on the track until it grenaded (225k on it and well over 100 hrs of racing). Then guy from a few pits down tossed us a bottle of Lucas Oil Stabilizer. What did we have to loose? Radioed the car in, dumped the additive in with the Mobil 1 and got back out on the track. Within one lap power was restored and it sounded silky smooth again. It was the last race for the car and motor so didn't bother do any forensics. But that stuff obviously freed up some blocked oil passage so the lifter(s) stopped banging on the cam lobe(s). Perhaps it's wetting properties came into play as well.
What engine on what type of rig?
Reply With Quote
  #30  
Old January 12th, 2014, 01:59 PM
rover4x4's Avatar
rover4x4
Status: Offline
Phillip
1995 SW #487/500
Member
 
Join Date: Sep 2003
Location: The Old North State
Posts: 7,525
Registry
i usually add half a bottle of marvel to my vehicles before i change the oil i also like techron and shell fuel no sludge or build up on the valve train
__________________
Poor gas mileage gets you to the best places on earth
Reply With Quote
  #31  
Old January 12th, 2014, 02:26 PM
down_shift's Avatar
down_shift
Status: Offline
Russell
94' D90 ST & 06' LR3
Member
 
Join Date: Sep 2011
Location: Leesburg, VA
Posts: 4,118
Registry
Quote:
Originally Posted by SMac View Post
Hmmm indeed. The guys over at bobistheoilguy seem to be all about it. Im going to waste some more when I do my next oil change, and also in the LR3. ------ Follow up post added January 12th, 2014 11:21 AM ------ What engine on what type of rig?
ChumpCar racing. M20 and E30 325is.
I'm not condoning the use of oil additives, but as a last resort to stay on the track or get home, give it a try -- it does work. But as Clay mentioned, who knows what kind of sludge it might loosen up only to clog up another passage or breather. Best to flush the oil and change the filter a few times after the knocking/banging subsides. Simple trick to try -- weigh the filters after draining them. The one catching the sludge will be apparent.
Reply With Quote
  #32  
Old January 12th, 2014, 02:51 PM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
Quote:
Originally Posted by down_shift View Post
16 hours into a 25.5 hour race our head starting making all kinds of ugly noise. So loud you could hear it over the open exhaust and power was down (3 seconds per lap). We were all set to keep it on the track until it grenaded (225k on it and well over 100 hrs of racing). Then guy from a few pits down tossed us a bottle of Lucas Oil Stabilizer. What did we have to loose? Radioed the car in, dumped the additive in with the Mobil 1 and got back out on the track. Within one lap power was restored and it sounded silky smooth again. It was the last race for the car and motor so didn't bother do any forensics. But that stuff obviously freed up some blocked oil passage so the lifter(s) stopped banging on the cam lobe(s). Perhaps it's wetting properties came into play as well.
Lucas thickens the oil. I doubt the passages were blocked but rather the clearances were too big for what had to be very hot, thin, synthetic oil. BTW Lucas works great in LT230s.
__________________
*not legal advice*
Reply With Quote
  #33  
Old January 12th, 2014, 03:28 PM
down_shift's Avatar
down_shift
Status: Offline
Russell
94' D90 ST & 06' LR3
Member
 
Join Date: Sep 2011
Location: Leesburg, VA
Posts: 4,118
Registry
Quote:
Originally Posted by evilfij View Post
Lucas thickens the oil. I doubt the passages were blocked but rather the clearances were too big for what had to be very hot, thin, synthetic oil. BTW Lucas works great in LT230s.
Could be, but it was a COLD 35f that October morning (3a) at Nelson's Ledges (Ohio) and the rocker noise came on quickly. We change all the fluids after each race and check the lash every third. No question it was a worn motor and just what Lucas had in mind for this product. Our "new" one last year was another junkyard pluck with 165k. Just a reseal, head gasket, pumps and good to go I hope for a few seasons. Needed to deck the head 0.012" after the second race, but the over heating was our bonehead error.
Reply With Quote
  #34  
Old January 20th, 2014, 09:47 AM
SMac's Avatar
SMac
Status: Offline
Sam
NAS 97 D90 SW
Member
 
Join Date: Oct 2007
Location: Idaho
Posts: 1,766
Think I screwed myself. Took the intake and valve covers off to find a sticky, sludgy disaster zone. A coat of hard sludge over everything and a lot of big, loose pieces floating around. Lots of carbon. I guess the Amsoil, Seafoam, and MMO are breaking up the gunk, but wow. I now doubt if the POs did any sort of normal oil changes on this truck.

I dont know how much sludge is too much. I tried vacuuming and scrapping off the big pieces.
Reply With Quote
  #35  
Old January 20th, 2014, 09:53 AM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,836
Registry
Rislone
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #36  
Old January 20th, 2014, 09:54 AM
1of40's Avatar
1of40
Status: Offline
1of40
NAS 97SW & 83 One Ten Tdi
Member
 
Join Date: Dec 2003
Location: Potomac Falls & Wintergreen, Virginia
Posts: 6,080
Registry
Really sorry to hear this Sam. If you find the chance please take some pics of what you've run into. I'm sure many of us have the same issue under the covers.

Clay
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #37  
Old January 20th, 2014, 10:16 AM
SMac's Avatar
SMac
Status: Offline
Sam
NAS 97 D90 SW
Member
 
Join Date: Oct 2007
Location: Idaho
Posts: 1,766
Click image for larger version

Name:	image-4143150456.jpg
Views:	75
Size:	551.7 KB
ID:	88223 Click image for larger version

Name:	image-2396663520.jpg
Views:	80
Size:	560.3 KB
ID:	88224 Click image for larger version

Name:	image-3194992170.jpg
Views:	80
Size:	560.1 KB
ID:	88225 Click image for larger version

Name:	image-3187682994.jpg
Views:	84
Size:	574.6 KB
ID:	88226

So am I sol?

This is after the vacuuming. I cant believe this truck ran like this, which also gives me hope that it will continue to do so. I could change out the heads, but I think there is probably enough wear on the lower end that it wouldn't be worth it. Frankly, I just want this thing to last for a couple more years and not spend bucks on another V8 now.
Reply With Quote
  #38  
Old January 20th, 2014, 10:20 AM
Bill Larson's Avatar
Bill Larson
Status: Offline
Bill Larson
97 D90 SW
Member
 
Join Date: Jul 2010
Location: AUS
Posts: 6,563
oh wow...and you drove it across country? yeah...I'd button it back up with the idea or plan to rebuild in a year...at least you know!
Reply With Quote
  #39  
Old January 20th, 2014, 10:24 AM
SMac's Avatar
SMac
Status: Offline
Sam
NAS 97 D90 SW
Member
 
Join Date: Oct 2007
Location: Idaho
Posts: 1,766
Lol. Ive put 30k on her like this. Ive done overly regular oil changes with Amsoil and Rotella, so Im assuming she looked like this when I got her. The price was good enough and she ran smooth so I didnt bother doing any compression or vitals checks at the time.

I just dont want another V8. I want that 3.2 TDCI. I may have to get a pulled 4.0 for a temporary replacement...they seem to be pretty cheap.
Reply With Quote
  #40  
Old January 20th, 2014, 10:29 AM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,531
Registry
Might be worth rebuilding on a completely different engine without as much..."stuff" in it. I've never seen an engine that looked like that on the inside before.
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



All times are GMT -5. The time now is 11:40 PM.


Copyright