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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars

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p1800 brake pad differences?

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Old Oct 12th, 2017, 17:45   #1
1800P
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Default p1800 brake pad differences?

hey all, I recently changed my old mans 62 p1800 front brakes over to the 65 models with new rotors calipers/caliper bracket/dust shield etc. everything fits up fine. apart from when I went to fit the brake pads, my father purchased them about 10 years ago and had never been used, they line up with the holes, although one pad on each of the calipers is to wide and I would basically have to hammer it in place and have 0 clearance. are there any differences in brake pads from the early jensens to the p1800s? the pads would fit a treat if they were machined down a tad(they are 16mm thick). I'm just wondering if they are not suited. or they are correct and I may have assembled the brakes incorrectly.

also if I were to purchase suitable pads. any recommendations for a good street pad?

cheers
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Old Oct 12th, 2017, 19:59   #2
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Ok at first I would say you have not pushed the 3 pistons back enough.

There are three in the caliper and to get the pistons flush you really need a pad spreader tool with the bleed screw released... as pushing the back with a screw driver does not work at all....

The dust cover should engulf the pistons if they after retracted back correctly and the piston edges flat to the caliper

There are two different types of pad depending on model year .

Make sure the caliper where the pads sit are scraped clean

hope it helps
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Old Oct 12th, 2017, 23:55   #3
swedishandgerman
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I recently replaced my front pads and without scraping some paint away, there's no way they would have moved as smoothly as they should. They were very tight indeed. I cleaned the paint away completely with my pocket knife and greased the guides properly.

I fitted EBC Greenstuff pads as I was given them. I'm told the genuine Volvo ones are the best and not too expensive.
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Old Oct 13th, 2017, 13:26   #4
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How about a review of the EBC pads? I have a new EBC Green set which are chamfered down a bit all round compared to normal ones and have the abrasive coatings on the clean the disc a bit before serious use. Not sure if that is good enough to cut through any glazing. Not sure whether to try them as am using the old ones I had in when I had my SBKV caliper problem. Caliper now changed but get a bit of a judder at speed now and again when braking. The disc being glazed may cause this, it did get smoking hot! I have a new set of standard Brookhouse ones too. Changing is an easy job but end of the season now so won't be adding too many miles to the oddo for a while. Still hope to break 2000 miles since the MOT in March though, even if it means a cruise to nowhere.
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Old Oct 13th, 2017, 20:53   #5
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I don't know what to say about the Greenstuff brake pads. I can't say there's a noticeable difference to what was fitted there before which I changed because they were worn. I don't know what make the previous ones were, but exactly as your description, they were not chamfered as the Greenstuff ones are.

All I can say is this: by the time I get to the bottom of the steepest hill up on the top of Dartmoor, the brakes are still performing exactly the same as they were at the top of the hill, so that's good!
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Old Oct 14th, 2017, 11:30   #6
Volvorama
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Default Original question

This doesn't apply to yours but I do understand that there was a change in calipers and therefore disc pads on 1800/122S around 1963/64.
Brookhouse list brake pads to fit cars from '64 to '68, so '62 pads would have been hard to find.
https://www.classicvolvoparts.co.uk/...Single_Circuit
I think that the change corresponds with the later calipers not having the bridge pipe between the two caliper halves.
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Old Oct 14th, 2017, 11:33   #7
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Default Buy it now.

If anyone does need early pads they are available elsewhere:
http://www.ebay.co.uk/itm/VOLVO-P180...-/391773748585
Pads, Girling, 1960-1961 Volvo P1800.
There are several others listed and it appears that the 'early' single circuit pads have no holes in them.
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Old Oct 14th, 2017, 18:01   #8
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cheers for the help lads, ive done everything I can, and they still don't fit properly. they are in place with pins. but there is 0 clearance on the twin piston side. and maybe 1mm clearance on the other side. these pads have the holes in them that are required for the 63 onwards models. I'm thinking I should just try a different brand pad or one that's thinner then 16mm.

ok after measuring the pads up(ferodo db549Z). the pads I have are 98/60/16mm. the ebc site states these are the size for the 70-71 models. and the earlier models are 98/68/16mm.
seeing as they are the same thickness (16mm) it would not make a difference trying a different set?

cheers
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Old Oct 16th, 2017, 23:38   #9
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Quote:
Originally Posted by Derek UK View Post
How about a review of the EBC pads?
Hi Derek,
Can't really comment about Greenstuff on an Amazon as I use Mintex M1148 competition pads in the rally car. However, I have fitted them to my BMW 740 Sport and they really are the dog's dangly bits. There is an abrasive layer which "deglazes" the discs and they fitted straight into the location in the single piston caliper that works on big slider pins which were replaced and greased with a new Textar "oil-free" lubricant. The car weighs 2 tonnes or more and since fitting them in place of standard BMW pads the thing actually stops when I press the brake pedal. No trace of fade, shimmy or judder even when braking from high speed, they just do the job. They are expensive cf. standard but........
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Old Oct 17th, 2017, 15:15   #10
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Chris, Cera Tec, Hydra Tec, or both?
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