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 Re: Daily Highway driver?
[Re: Kevin C]
#1041239
02/01/12 06:05 PM
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Joined: Aug 2008
Posts: 1,186
Body Damage is Cool
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I drove my 2.6/5speed on a 750 mile trip going 75mph the whole way. Something is wrong with yours if you can't do 65. My truck could still squeeze out 65 with stock gears and 38s. I would adjust the timing. Check the vacuum advance also. Maybe you have head winds every time you go to and from work slowing you down. <img src="/forums/images/graemlins/lol.gif" alt="" />
Last edited by 0778drz110; 02/01/12 06:07 PM.
'88 Raider, 33" Maxxis, 2" body lift, 10K winch
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Re: Daily Highway driver?
[Re: 0778drz110]
#1041240
02/01/12 06:35 PM
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Joined: Sep 2006
Posts: 2,712
Roll Me Over
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Way back when my Gen 1 was young, I had similar issues with not being able to maintain speed. The problem in mine turned out to be a bad fusable link at the battery. When the engine was under load electrical power was reduced to the ignition. I have replaced the fusable like in that truck 4 times for the same problem. It is hard to think I am the only one with failing fuse links causing undiagnosed power losses.
On an offshot when the engine is idleing wiggle the 3 link wires coming off the battery to see if the engine falters. The wire fatigues inside the insulation.
Kevin, I had not noticed the different OD ratios for the lockup transmission. I would love to find a closer ratio for the top gears in the SR transmission, that needs a fix more than anything I have driven in the hills lately.
Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.
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Re: Daily Highway driver?
[Re: OldColt]
#1041241
02/01/12 06:55 PM
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Joined: Apr 2008
Posts: 441
Mudrunner
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An Auto montero is going to be about 500-600rpms less in overdrive then what a 5 speed is in 5th. An Auto has more drivetrain loss as well. What size tires do you have?
Last edited by TainterRacing; 02/01/12 06:59 PM.
1997 Montero LS with a motor swap a 1990 V6 12valve ported heads full 2.5in Ex I run stock tire size for Daily use, off road have 33x12.5 working on going trubo.
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Re: Daily Highway driver?
[Re: OldColt]
#1041242
02/02/12 04:53 AM
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Joined: Dec 2007
Posts: 2,348
Body Damage is Cool
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Way back when my Gen 1 was young, I had similar issues with not being able to maintain speed. The problem in mine turned out to be a bad fusable link at the battery. When the engine was under load electrical power was reduced to the ignition. I have replaced the fusable like in that truck 4 times for the same problem. It is hard to think I am the only one with failing fuse links causing undiagnosed power losses.
On an offshot when the engine is idleing wiggle the 3 link wires coming off the battery to see if the engine falters. The wire fatigues inside the insulation.
Kevin, I had not noticed the different OD ratios for the lockup transmission. I would love to find a closer ratio for the top gears in the SR transmission, that needs a fix more than anything I have driven in the hills lately. I just did this yesterday by accident and my 88 did the faltering thing. Am going to look at it this weekend. Never thought about it robbing power. Thanks.
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Re: Daily Highway driver?
[Re: OldColt]
#1041243
02/02/12 05:08 AM
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Joined: Jun 2002
Posts: 6,211
Trail Leader
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I would love to find a closer ratio for the top gears in the SR transmission, that needs a fix more than anything I have driven in the hills lately. Yep. I just came back from a camping trip in my '95 and pushing 35's and a loaded cab up to 6500+' really shows off how hard the 'platform' has to work. There's a lot of gear-hunting and obviously way-mis-matched gear ratios for the application. 5.29's would probably be in my best interest, if obtainable/installable/durable/"affordable". John B.
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Re: Daily Highway driver?
[Re: JohnnyBfromPeoria]
#1041244
02/02/12 05:53 AM
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Joined: Feb 2005
Posts: 7,458
Trail Leader
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Depending on the engine mileage, you could be running into things like stretched timing chains, worn guides, etc. that affect the overall engine performance. Even with a blown headgasket and a shortblock that used oil, I had no difficulty maintaining 65 mph with my Raider.
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