BUGA Community
General Category => CF Bedford Chat => Topic started by: Bas / NZ on May 03, 2012, 07:53:14 PM
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Ok Guys, someone in the know out there. I have 2 standard BEDFORD Diffs one is the Square back one i thinks is 9" DRUMS and the round back diff I think is 10" drums.
Can I change over the 10" backing plates and drums etc to the square 9" diff or not?
(If not) does anyone in NZ have a set of 9" drums (think I have the backing plates) for sale
And for the guys in NZ, where do I get a new pinion oil seal.
Any help thanks Bas
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yes you can change them over but!!!!! you need to change over the plates behind the axle bearings, 9inch have 4 bolts, 10 inch have 6 bolts and shaped differently, you need at least 20 ton press.
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Ok, thanks for that John, on a closer look, (now that it is daylight :D the plate behind the axle bearing is welded on on both these diffs. Cheers Bas
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Ok to all you guys out there running these 3.8 v6 in your Bedfords, or those in the Know.
Do you need a 3.5 etc rear end in a bedford, yes I know the Car has this but the Bedford is a lot bigger, well my Jumbo is, and it is running the TH 700 4 speed overdrive.
With the standard 4.1 the advandage is you have a lot more power of the mark and the final drive is there a different ratio between the 4.1 and 3.5 once you are in 4th (overdrive)
I understand gas usage around town would be higher with the 4.1. but this is out weight by the power gain to me..... Ok it makes me feel like I have a V8 ;)
THE REASON I ASK THIS AS MOST WILL KNOW WE HAD THE 2.8 TURBO DELICA VAN, THAT I SHOWED PHOTO'S OF THAT A TRUCK DECIDED TO TAKE OUT. (SH...T CAPS ON)
This Delica ran a 4.1 rear end with overdive Auto from factory
Thoughts info please, I'm am leaning towards leaving the 4.1 in , as at the moment with the Duels, I think it is a 5.1 ratio.
Cheers guys. Bas
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Do you need a 3.5 etc rear end in a bedford, yes I know the Car has this but the Bedford is a lot bigger, well my Jumbo is, and it is running the TH 700 4 speed overdrive.
The VN I got my engine out of to my knowledge had a 3.08 ratio. The Jag I have put in has 3.07 ratio so I'm just going with that till I see how it performs. It should be fine around town but the van has that extra wind resistance factor when it gets to open road so that may be an issue. If it is I'll just swap up then.
Of course you're putting yours into a Jumbo so weight and wind resistance are probably more of a factor than my SWB (even with the metalwork ;)) .
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excuse my dumbness but just so i know how it work if say you are running a 3.08 diff wich way do you take it to gear it up for betta road speed
im no machanic aye can do most stuff like cams and rings ,bearings that sort of thing but gear ratios have know idea
im more your body kit modifier
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If you go to something like 4.1 or 5.1 that Baz is talking about you will get better speed off the mark but higher revs at the top end. If you are drag racing this is great but not so good for fuel economy at the top end. Much better for carrying heavy loads and things like campers.
Ratios like the 3.08 are much better for things like cruising at open road speeds as it keeps the engine revs down and thereby improves fuel economy but it is not so good taking off from standing still especially if towing a heavy load.
You can get the effect from riding your mountain bike. Pick a low gear and take off from standing still. It's quite easy but once you get up to speed you'll find your legs are going round quite fast at a given speed and you end up puffed. This would be a 4.1 ratio.
Now if you pick a higher gear and take off you'll find it harder initially but as you get up to the same speed as previous you'll find your legs don't have to go round quite as quick to maintain the same speed so you can breathe more easily. This would be a ratio like a 3.08.
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ok get it now the higher the ratio the quicker the take off but the topend speed drops the lower the ratio the betta the top end but you loose your take off speed
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You wouldn't want 4:1 behind the commodore. I started with the 3:08 but wasn't happy at 100kph (at 2300rpm) so went to 3:3 (i think it was), with a heap of stuff in the van it towed the custom van down to the nationals well (except the trans over heating at the end), even going up the bombays it only went into 2nd a few times, i did plant it once to see if it would jump into first and it did but it cruised nicely.
with the commodore centre you can go up to 3:7, you can get 3:9 and 4:1 but they are later model and larger and require some machining to fit.
Give the guys out at "diffs r us" a call, they worked out the rpm range of my new gears off the top of his head and was pretty close.
Your tyres also play a big part in it as commodores came out with 15" but a high profile (60 series) tyre can be similar size - I think it was 26 inches around the trye
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Thanks Guys, David would love to put the round heavy duty bedford diff under her, but not sure about fitting the cresta or holden head into this, as Murry said it fits the round diff, but I have two of the square back plate diffes here with cresta in, ( I'M Lost) ;)
Will be running 275 x 60 on 15x8" rims rear and 215 x 70 on 14x7" rims front
ANY ONE GOT SOME 9" DRUMS PLEASE PLEASE, WILL THEM BE ABLE TO GO WITH THE BEDFORD DIFF I HAVE HERE WITH THE GRESTA ALREADY IN IT..........
I thinkk this van is running 4.1 diif and v6 and 5 speed?
(http://widewheels.webs.com/sign%20written%20500x3.jpg)
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You wouldn't want 4:1 behind the commodore.
I second that, the 4.1 = massive revs at 100 clicks, even with a transmission with an over drive.
I started with the 3:08 but wasn't happy at 100kph (at 2300rpm)
3.08 is a little on the low side, not quite enough poke for hills etc
so went to 3:3 (i think it was)
3.3 or what I am currently running 3.45 is a pretty good combo.
I think that anywhere between 3.3 and 3.7 (depending on what centre you can find) would be a pretty happy medium.
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Bas, ph Harry on 818 3728 he's just in Kelston, he has everything bedford. be warned though he'll talk your ear off and is always ready with a joke or two
He's got a sliding door bedford there and even an old thames van (and original triumph motorbike), as well as some brand new, boxed (or in crates) Indian motorbikes - ex army (they down matamata), think he has about 6 of them as well as a barn full of classics (he wont part with any)
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You wouldn't want 4:1 behind the commodore.
I second that, the 4.1 = massive revs at 100 clicks, even with a transmission with an over drive.
I started with the 3:08 but wasn't happy at 100kph (at 2300rpm)
3.08 is a little on the low side, not quite enough poke for hills etc
so went to 3:3 (i think it was)
3.3 or what I am currently running 3.45 is a pretty good combo.
I think that anywhere between 3.3 and 3.7 (depending on what centre you can find) would be a pretty happy medium.
Ok 5.1 at 100km revs 2100 thats what I get at the moment with the TH700 with the duel wheels
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Bas, ph Harry on 818 3728 he's just in Kelston, he has everything bedford. be warned though he'll talk your ear off and is always ready with a joke or two
He's got a sliding door bedford there and even an old thames van (and original triumph motorbike), as well as some brand new, boxed (or in crates) Indian motorbikes - ex army (they down matamata), think he has about 6 of them as well as a barn full of classics (he wont part with any)
David, will he have 9" drums ?
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9" are swb (4 bolts holding backing plate) and 10" are usually lwb (6 bolts holding backing plate)
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9" Drums anyone got a couple of spare...And where do I get a new pinion oil seal
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Ph Harry, he has everything up there, if he hasn't he should be able to get it for you.
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Thanks david, been down for the last couple of days ( you understand why), couldn't even make it to Kelston, when I'm back on my feet, will give him a call. Bas
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just so i know wat is the ratio for a cf2 diff
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and would a 3.55 10 bolt be ok to use with a 202 with trimatic gear box
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Yep, runniner a 3.5 cresta in the camper, and this is big van behind a 202 and trimatic, a little tall for the size van, put perfect for a standard (swb), or jumbo van....
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i,m running 2.78-1 10 bolt
very slow taking off great for high speed
running 173 red
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Anyone Know the best place to get wheel cylinders and Brake shoes in NZ. Thanks Bas
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Try BNT
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Auto Stop definitely stock them.
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thanks Guys............. :)
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hay Bas, I got all my brake stuff through Partmaster
Cheers Paddy
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Cheers Paddy, how's it all going, bet you miss the Beddie by now. Any idea on price you might of payed, the other 2 places have them, but a bit of differance in price..... Bas
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I get trade at part master in hams so let me know what you are after and i will get a price for ya mate sweet as.
Yea do miss the van for shaw.
Cheers Paddy
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Hi
Just a quick question, is the front end off a 78 cf bedford SWB the same as the LWB. The reason being is the local wreckers have a LWB with a 307 chev and a disc brake front end. As i want to convert my drums to disc.
Thanks Matt
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should be a strait swap .. you will need to sort out the master and maybe the brake lines and drive shaft ... well thats what i am hoping as i have a 350 powered jumbo with front disks and plan on swaping that into my 79 swb ... only my jumbo is an early 70's
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Hi
Just a quick question, is the front end off a 78 cf bedford SWB the same as the LWB. The reason being is the local wreckers have a LWB with a 307 chev and a disc brake front end. As i want to convert my drums to disc.
Thanks Matt
Same as Matty...swapped my whole crossmember n front end from my last CFS into my Jumbo that i have now...
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Ok, after talking to all the right people, well so I'm told, I will be staying with the 4.1 single wheel Jumbo diff behind the TH700 as I have a Manural swith to lock T converter, hooked up. Yes will use a little more Gas, but will be on LPG, so should be ok, shouldn't use more than an 8 any way.
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Best way is try it and see
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Yes that is right, but because all the mounts have to be changed to fit the duel wheel setup, a bit of work, but little cost involed, well have weled it all up now, will lift the Beddie next weekend and roll it under, also sitting on 15" x 60 x 275 so should give a little better gearing....
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Still trying to hunt down x2 9" drums, anybody in NZ.... Can I use another 9" drum and fill and redrill studs ???
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:( :( :( ???
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Ok looks like the diff is off to the scrap metal guys............. no were else to look for 9" drums :( back to the 4.1 gears I guess
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Bas, wish I could help. My spare is the 10inch setup. Stuey has been threatening to replace his existing axle with the Borg Warner modified one I organised him over a year ago. His existing setup has a Cresta centre and 9 inch drums. Drop him an email to see if you can hurry him along.
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Bas did you phone Harry?
Have you tried new drums? try BNT or that place off Lincoln road (opposite the netball courts, down the road from the Green), they sell all brake stuff, blank discs, hq .... might do drums
nz brake company ltd
10 B Te Pai Place, Henderson, Waitakere, Auckland Region 0610
(09) 836-6673
BNT Automotive
3 Waipareira Avenue
Lincoln 0610, New Zealand
(09) 837 2996
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Yep Harry got nothing looked under all the trees etc ;D Tried BNT, 9" yes but not the same width, Cheers
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Can someone measure the width of the 9" drum please ( rear ) or depth to some.. Thanks
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Hay Bas,I may have 2 drums on a van i had for parts i will try to get around there today after work and see if i can get them off for you
If they are 9" drums you can have them.I come up to akld on a sunday in a truck so if i have got a run up there this sunday if you could meet me at the BP truck stop on the motorway i can drop them off for ya.
Cheers Paddy
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Anyone come across any 9" drums laying around yet............. ??? ??? ???
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Ok looks like I am going to give my engineer skills ??? a working going to graft the 10" backing blate on to the 9" housing, after all once this is on, evrything is connected to this right....... ??? Going by all the measurements I have taken, just have to machine up a part plate to weld on to the old housing, as the 4 bolt holes on the 9" line up with the 10" plate. ;) But ofcourse it can't be that simply can it or am I missing somethig. ???
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i have seen this done before bas. he just used the 4 bolt holes and didnt worry about the other 2.
cheers
ben
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i have seen this done before bas. he just used the 4 bolt holes and didnt worry about the other 2.
cheers
ben
Thanks Ben, 4 bolt holes don't line up as I thought, but new ones can be drilled in the backing plate ok.............. :D :D :D
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oh he must have rhemed out something then ay.
youd want it to be pretty spot on wouldnt ya? otherwise the brakes wouldnt work too good..
ben
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Hey Ben think you saw it on my van.
Just had a quick look under van , have 10 inch beddy drum brakes bolted to the 4 bolt 9 inch axle.
Dont have a camera right now on me , will try take some later. But i can just see half of the extra 2 holes that would of bolted to the
6 bolt 10 inch axle.
Cheers Frank
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Ok guys, just in case you need this for future use, 10" onto 9" is a go, just sloted the holes and welded them back up to leave the new postion of the hole, done 4 bolts but will shoot down and machine up a part plate and weld it in to align the 2 extra holes, don't think you have to but will as I'm fussy. :) Diff and a new set of feet on its wayyyyyyyyyyyyyy :D :D :D :D :D :D