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  #1  
Old May 20th, 2012, 11:09 PM
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A few series 3 questions?

Ok i have a list of questions about the series 3 88" sold here in the US.

-What kind of highway cruise speed is sustainable on a solid running 2.25 petrol with no overdrive?
-What size is the stock fuel tank capacity in US gallons, for an 88" Station Wagon?
-And will a LT77 Bolt up to the 2.25 and stock transfer case without much issue, and without custom driveshafts?
-Is it hard fitting a stereo and speakers in one?

That is all, thanks for the help.
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  #2  
Old May 21st, 2012, 10:36 AM
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Ethan
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With stock gearing and diffs, you could probably comfortably do 55. You might be able to make 65, might. Remember that these are glorified tractors and aren't really built for speed. I think the fuel tanks are around 12 gallons. I'd be a little surprised if an LT77 bolts up directly to a series III t-case, but they are close enough in year that they might. I do believe the LT77 is longer, so you would probably end up needing custom driveshafts (which isn't really a big deal; a machine shop might charge you $100 ea to cut them down, balance and re-weld them). You would probably also need to use the LT77 left side mount, which will probably require drilling new holes in the frame to accomodate the mount.

I may be wrong about everything though too...
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  #3  
Old May 21st, 2012, 10:53 AM
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Jim Pace
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Series III

My 2 cents:
50-55 is OK. 65 would really be pushing it! Locate an overdrive!!! Install taller tires. These two will help if hwy speed is a big concern. However driving a stock Series is much more than that. It is almost dangerously SLOW in acceleration for "modern" traffic. It can't accelerate or brake w/ traffic. It is outdated technology in power, suspension, handling and braking. Part of why we LOVE them. Any jake leg w/ a checkbook can drive a "fill in the blank" but it takes character to really appreciate a Series truck! Even more so if double clutching the old box.
For years now I drive a III 88 daily in the summer and LOVE it...but in a rural area w/ very little traffic. There is a reason they don't make them like that any more...
Jim
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  #4  
Old May 21st, 2012, 12:00 PM
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I have put 1000's of highway miles on stock 88's and 109's, both with and without overdrive.

Quote:
Originally Posted by JohnsD90 View Post
Ok i have a list of questions about the series 3 88" sold here in the US.

-What kind of highway cruise speed is sustainable on a solid running 2.25 petrol with no overdrive?
-What size is the stock fuel tank capacity in US gallons, for an 88" Station Wagon?
-And will a LT77 Bolt up to the 2.25 and stock transfer case without much issue, and without custom driveshafts?
-Is it hard fitting a stereo and speakers in one?

That is all, thanks for the help.
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  #5  
Old May 21st, 2012, 12:34 PM
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Top speed wasn't really a concern, I just wanted to know if I could cruise at 60-65 in it so I could take it to work (most of the 40mi ride i cruise at 75-80mph), but it's no big deal. The fuel tank was my biggest concern, I was really hoping it would be 14-16 gallons, but I could just put a bigger tank in. I only asked about a lt-77 cause my buddy will have one soon and I could prolly get it cheap. If all goes as planned I should be getting a Series 3 in early August!

Thanks!
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  #6  
Old May 21st, 2012, 02:15 PM
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Teriann Wakeman
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Quote:
Originally Posted by JohnsD90 View Post
Top speed wasn't really a concern, I just wanted to know if I could cruise at 60-65 in it so I could take it to work (most of the 40mi ride i cruise at 75-80mph), but it's no big deal. The fuel tank was my biggest concern, I was really hoping it would be 14-16 gallons, but I could just put a bigger tank in. I only asked about a lt-77 cause my buddy will have one soon and I could prolly get it cheap. If all goes as planned I should be getting a Series 3 in early August!
!
First the engine:

The 2.25L petrol engine likes to cruise all day at around 3200 RPM. When climbing a hill and loosing speed the power seems to start dropping fast at around 2400 RPM. That is my hill down shift point when I'm trying to climb at maximum speed.

So here are some numbers :
65 MPH = 3,682 RPM using 32 inch diameter tyres (stock 109 tyre size)
60 MPH =3,400 RPM (about as fast as I would cruse)
55 MPH = 3,121 RPM (which is why people call it a 55 MPH truck. It is close the the engine sweet spot)
50 MPH = 2,838

Second fuel capacity:

There was an optional left side under seat 12 gallon fuel tank. You buy the left side fuel tank outrigger, weld it on, cut out the seat box on that side, buy a brass fuel selector valve from the auto parts store & plumb it in. You can get a second fuel filler and put it on the left side.

I have a how-to page for the conversion

with the second tank you have a 24 gallon capacity.

Any 5 speed gearbox is longer than the LR 4 speed and an 88 has a very short rear propshaft. When Rover added a 5 speed box they lengthened the truck. I strongly suggest an overdrive instead a 5 speed for an 88. The OD can be both a fifth gear and you can split gears for major headwinds and hills.

Third, speakers & radio:

Not overly hard to install but hard to hear.

In my truck I built a shelf that sits at the front above the windows. I have a speaker facing down near each end and both a radio & CB sitting on the shelf. Some people mount them in cubby boxes which replace the centre seat. Some people will mount a radio vertically to the bulkhead. I just find the overhead easier and it keeps the speakers in front of me for a more natural listening position.
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  #7  
Old May 21st, 2012, 08:35 PM
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Well the issue is that as long as the plan stays after i buy the truck, i want to put a 4BT or isuzu 2.8td in there in a few years, as the 2.25 petrol is not quite the motor for me, and i would not mate that series transmission to a powerful diesel like that, and thats besides the fact that 4 gears isn't enough.
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  #8  
Old May 21st, 2012, 09:09 PM
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-What kind of highway cruise speed is sustainable on a solid running 2.25 petrol with no overdrive?
Answered above, but I will add that NADA SIIIs came with 15in rims and 32in tires are not easy to find for them so figure on 16in rims. For a long time BFG made 33x9.50 ATs which were the ticket in a series truck. FWIW, my 1959 I ran at the redline doing ~80mph (measured by a disco behind me, speedo on 88" was pegged), no OD, with 32in tires. Not recommended.

RRC diffs are a fine conversion if you don't mind losing off road gearing.

-What size is the stock fuel tank capacity in US gallons, for an 88" Station Wagon?
Get two tanks. No big deal if you can find one.

-And will a LT77 Bolt up to the 2.25 and stock transfer case without much issue, and without custom driveshafts?
You need new driveshafts and the ashcroft LT77 to series T-case adaptor. It works if you have the 4 cylinder LT77.

-Is it hard fitting a stereo and speakers in one?

Not at all.
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  #9  
Old May 21st, 2012, 09:26 PM
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Thanks Ron, I'm not much an offroader, but I just need it too pull stuff around in the backyard. I will definetley look into the RRC diffs to help out the gearing. I will do a radio though.
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  #10  
Old May 21st, 2012, 10:32 PM
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I mean a series truck as a commuter take a particular breed (Teri Ann, Ren Ching etc.) and I would not drive one in rush hour traffic or at interstate speeds in traffic.
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  #11  
Old May 22nd, 2012, 07:50 AM
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I used to commute in my '73 from Harpers Ferry, WV to Rockville, MD doing about 65 (that was pedal to the metal). Even my dad drove the route sometimes, but he learned to drive in a Model T with no 1st gear, so I guess it wasn't that much different.
My Lightweight I drove back and forth between VA and VT and to WI. One of my 109's I also drove between VT and VA a few times.
So it's obviously doable, and you can live to tell the tale, but it does take a certain mindset.
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  #12  
Old May 22nd, 2012, 09:03 AM
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Fitting a stereo is not difficult. I have had a very nice stereo in mine for years and I cannot recall the last time it was actually on. You can hear OK when stopped at a stop light. Much beyond that it's just more noise. Attempting to have a conversation while at crusiing speed is difficult enough.
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  #13  
Old May 22nd, 2012, 12:31 PM
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I am really liking the feedback. I don't really have an issue with road noise and and such as i have taken many long distance rides in roll off trucks and various other old loud trucks.. I don't really drive more than 200 Mile trips so long distance wont be bad.
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  #14  
Old May 22nd, 2012, 01:28 PM
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Also consider some of Exmoor's sound deadening rubber floor mats. Pretty effective.
And, I know of a 109 with a 4BT that needs some transmission and transfer case work that could be purchased as is.
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  #15  
Old May 22nd, 2012, 04:47 PM
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Quote:
Originally Posted by Roverlab View Post
Also consider some of Exmoor's sound deadening rubber floor mats. Pretty effective.
And, I know of a 109 with a 4BT that needs some transmission and transfer case work that could be purchased as is.
Hmmmm....
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