Caliper Upgrade, Tube vs Passage

Tech tips and how to's

Moderators: notoptoy, garth, S Allen

User avatar
Curtis
Site Supporter
Posts: 2577
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA

Caliper Upgrade, Tube vs Passage

Post by Curtis » Mon Jul 15, 2019 9:48 pm

Stock brakes have the crossover tube. For an upgrade does the inside passage offer much of an advantage?
66 stroker
67 basket case, the renewal has begun.

User avatar
SLOroadster
Roadsteraholic
Posts: 5298
Joined: Sun Dec 08, 2002 2:53 am
Location: Napa Ca

Re: Caliper Upgrade, Tube vs Passage

Post by SLOroadster » Tue Jul 16, 2019 2:28 pm

I'd say no. You still have a potential leak point. About the only thing you will gain is a potentially lighter brake caliper (That may or may not flex more) and possibly more brake pad availability.

That said, I'm tempted to try some of the aftermarket Dunlop Mk2 calipers for Jaguars. They should bolt up to the stock frames, but should be lighter and less prone to rusting since they are made from CNC'd aluminum.

Will
Sorry, I find modern engine swaps revolting. Keep your G, R, or U series in your Roadster!

greydog
Roadster Fanatic-Site Supporter
Posts: 1644
Joined: Sat Nov 21, 2009 11:37 pm
Location: Vancouver, Washington

Re: Caliper Upgrade, Tube vs Passage

Post by greydog » Tue Jul 16, 2019 5:10 pm

Curtis-
Are you talking about stock calipers or a Volvo conversion?
I don't know about the stock calipers but I believe the cross drilled Volvos have some benefit.
Not only are you eliminating the two connections of the feed tube (and it's potential leaks, you eliminate the need for the adapter/feed block that requires more connections points. Some have had issues with leaks at the adapter block so it seems wise to eliminate the potential trouble. Fewer parts, one less thing to buy.
I really like Will's idea. An aluminum caliper with the vented Altima rotor would be much more modern and probably loose 10 lb per wheel and still fit most 14" wheels.
Dan
.68 SRL311 aka "Skortch". On the road again.
'69 SPL311 aka "Scooter" terrorizing the streets
1990 Nissan 300ZX
2008 VW GTI
2017 VW Passat

User avatar
Curtis
Site Supporter
Posts: 2577
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA

Re: Caliper Upgrade, Tube vs Passage

Post by Curtis » Tue Jul 16, 2019 5:38 pm

Okay, the cat's out of the bag. I'm going Jaguar. They are offered both with the tube and without. And no adapter needed, they bolt right on.
66 stroker
67 basket case, the renewal has begun.

greydog
Roadster Fanatic-Site Supporter
Posts: 1644
Joined: Sat Nov 21, 2009 11:37 pm
Location: Vancouver, Washington

Re: Caliper Upgrade, Tube vs Passage

Post by greydog » Tue Jul 16, 2019 8:24 pm

Nice. Gotta do a little googling.
Dan
.68 SRL311 aka "Skortch". On the road again.
'69 SPL311 aka "Scooter" terrorizing the streets
1990 Nissan 300ZX
2008 VW GTI
2017 VW Passat

User avatar
cktrap
Monthly Subscriber-Roadster Enthusiast
Posts: 929
Joined: Sun Mar 23, 2008 8:56 pm
Location: colleyville,tx

Re: Caliper Upgrade, Tube vs Passage

Post by cktrap » Tue Jul 16, 2019 8:33 pm

Curtis wrote:
Tue Jul 16, 2019 5:38 pm
Okay, the cat's out of the bag. I'm going Jaguar. They are offered both with the tube and without. And no adapter needed, they bolt right on.
Update us when you try them out. Sounds like a win win
'70 SRL311
'10 GMC 2500HD

User avatar
Curtis
Site Supporter
Posts: 2577
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA

Re: Caliper Upgrade, Tube vs Passage

Post by Curtis » Tue Jul 16, 2019 8:53 pm

So here is a Datsun caliper and Jaguar. Spacing is the same, pipe threads the same, even the little bolts that hold on the cylinder are the same.

The upgrade with the Wilwood caliper needs an adapter.
IMG_2427.JPG

IMG_2428.JPG
You do not have the required permissions to view the files attached to this post.
66 stroker
67 basket case, the renewal has begun.

User avatar
spl310
Roadster Guru
Posts: 12156
Joined: Sun Dec 29, 2002 10:38 pm
Location: In front of this keyboard... in Jacksonville, Florida!

Re: Caliper Upgrade, Tube vs Passage

Post by spl310 » Wed Jul 17, 2019 9:11 am

The reduced weight of the Jaguar caliper is nice. Jag guys often buy Datsun caliper packs because they are cheaper though.
"Wow, a Roadster!" Stuart Little

1967.5 2000
1967.5 2000
1964 1500
1964 1500
1967.5 1600
1968 chassis
2000 Durango
1995 F350 Powerstroke!
More...

Jack Maskell
Roadster Fanatic
Posts: 119
Joined: Wed Nov 26, 2008 2:15 pm
Location: Naughton Ontario Canada

Re: Caliper Upgrade, Tube vs Passage

Post by Jack Maskell » Wed Jul 17, 2019 11:01 pm

So can we just machine off the stock calipers to match these?
68 solex rolling chassis
67 spl311 original
67 custom rotary spl311
68 spl311 donor car

User avatar
Curtis
Site Supporter
Posts: 2577
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA

Re: Caliper Upgrade, Tube vs Passage

Post by Curtis » Wed Jul 17, 2019 11:37 pm

Jack Maskell wrote:
Wed Jul 17, 2019 11:01 pm
So can we just machine off the stock calipers to match these?
You could or just buy some used Jaguar ones.
66 stroker
67 basket case, the renewal has begun.

User avatar
SLOroadster
Roadsteraholic
Posts: 5298
Joined: Sun Dec 08, 2002 2:53 am
Location: Napa Ca

Re: Caliper Upgrade, Tube vs Passage

Post by SLOroadster » Thu Jul 18, 2019 2:41 pm

Now go looking for the actual hydraulic cylinders that are made aftermarket for Jags. That is what I was talking about. I found a few awhile back that looked very interesting, but I don't have the links on this computer. Try searching Jaguar XKE brake calipers and you might find them.

Will
Sorry, I find modern engine swaps revolting. Keep your G, R, or U series in your Roadster!

User avatar
Curtis
Site Supporter
Posts: 2577
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA

Re: Caliper Upgrade, Tube vs Passage

Post by Curtis » Thu Jul 18, 2019 3:05 pm

SLOroadster wrote:
Thu Jul 18, 2019 2:41 pm
Now go looking for the actual hydraulic cylinders that are made aftermarket for Jags. That is what I was talking about. I found a few awhile back that looked very interesting, but I don't have the links on this computer. Try searching Jaguar XKE brake calipers and you might find them.

Will
There are several available. Put in jaguar e type front brake upgrade. None of them are cheap. Lowest I found is just over $500.
66 stroker
67 basket case, the renewal has begun.

User avatar
SLOroadster
Roadsteraholic
Posts: 5298
Joined: Sun Dec 08, 2002 2:53 am
Location: Napa Ca

Re: Caliper Upgrade, Tube vs Passage

Post by SLOroadster » Fri Jul 19, 2019 2:20 pm

Curtis wrote:
Thu Jul 18, 2019 3:05 pm
SLOroadster wrote:
Thu Jul 18, 2019 2:41 pm
Now go looking for the actual hydraulic cylinders that are made aftermarket for Jags. That is what I was talking about. I found a few awhile back that looked very interesting, but I don't have the links on this computer. Try searching Jaguar XKE brake calipers and you might find them.

Will
There are several available. Put in jaguar e type front brake upgrade. None of them are cheap. Lowest I found is just over $500.
How much is a set of Wilwoods, or any other aftermarket brake calipers? I'd guess they are more.

Will
Sorry, I find modern engine swaps revolting. Keep your G, R, or U series in your Roadster!