If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
JBweld on intake manifold?
I have an old v8 motor with an inlet manifold that is a bit worse for
wear. It's around a couple of the water jacket areas on the face that is against the heads, it had corroded a bit to the point that water will easily leak past. This is a pic of the worst part, http://members.iinet.net.au/~jkaufman/manifold.jpg I can't afford a new manifold so i was wondering if jbweld would hold up if i used to to make sure it's nice and flat along the sealing parts, there is no actual holes through the water jacket ect. Looking at the specs it states up to 500deg F, i have no idea what temp it would get up to on an intake manifold, but they do say "Not recommended for use on manifolds, exhaust systems, and other engine components which normally operate at temperatures above 500° F." Don't know if that is just exhaust maifolds or what, hoping someone have have some experiance as to wether it would work or not? Cheers James |
Ads |
#2
|
|||
|
|||
JBweld on intake manifold?
james > wrote:
>I have an old v8 motor with an inlet manifold that is a bit worse for >wear. It's around a couple of the water jacket areas on the face that >is against the heads, it had corroded a bit to the point that water >will easily leak past. >This is a pic of the worst part, >http://members.iinet.net.au/~jkaufman/manifold.jpg > >I can't afford a new manifold so i was wondering if jbweld would hold >up if i used to to make sure it's nice and flat along the sealing >parts, there is no actual holes through the water jacket ect. > >Looking at the specs it states up to 500deg F, i have no idea what >temp it would get up to on an intake manifold, but they do say >"Not recommended for use on manifolds, exhaust systems, and other >engine components which normally operate at temperatures above 500° >F." > >Don't know if that is just exhaust maifolds or what, hoping someone >have have some experiance as to wether it would work or not? I have used high temperature epoxy materials (the red two-part stuff) on motorcycle intake manifolds before and it held up fine. Try the JB Weld and see. Worse comes to worst it comes apart and you wasted an afternoon's work and maybe need to clean some gunk out of your water pump. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#3
|
|||
|
|||
JBweld on intake manifold?
james wrote:
> I have an old v8 motor with an inlet manifold that is a bit worse for > wear. It's around a couple of the water jacket areas on the face that > is against the heads, it had corroded a bit to the point that water > will easily leak past. > This is a pic of the worst part, > http://members.iinet.net.au/~jkaufman/manifold.jpg > > I can't afford a new manifold so i was wondering if jbweld would hold > up if i used to to make sure it's nice and flat along the sealing > parts, there is no actual holes through the water jacket ect. > > Looking at the specs it states up to 500deg F, i have no idea what > temp it would get up to on an intake manifold, but they do say > "Not recommended for use on manifolds, exhaust systems, and other > engine components which normally operate at temperatures above 500° > F." > > Don't know if that is just exhaust maifolds or what, hoping someone > have have some experiance as to wether it would work or not? > Cheers > James It may work, but let me ask you this, what is that manifold from? Is it an old car that needs a numbers matching manifold for any reason? The reason I ask is this, if it's a small block chevy manifold (can't really tell from the pic) you could pick a stock one up for next to nothing. The best performing ones can be found for $25 pretty easily at a junkyard, and if you know some car guys, chances are good one of them has one laying around that you could get for nothing. |
#4
|
|||
|
|||
JBweld on intake manifold?
It should. Folks use the stuff to block water jacket holes when they
swap heads on 2 different straight 6's Jeep makes. They all say it holds... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) james wrote: > > I have an old v8 motor with an inlet manifold that is a bit worse for > wear. It's around a couple of the water jacket areas on the face that > is against the heads, it had corroded a bit to the point that water > will easily leak past. > This is a pic of the worst part, > http://members.iinet.net.au/~jkaufman/manifold.jpg > > I can't afford a new manifold so i was wondering if jbweld would hold > up if i used to to make sure it's nice and flat along the sealing > parts, there is no actual holes through the water jacket ect. > > Looking at the specs it states up to 500deg F, i have no idea what > temp it would get up to on an intake manifold, but they do say > "Not recommended for use on manifolds, exhaust systems, and other > engine components which normally operate at temperatures above 500° > F." > > Don't know if that is just exhaust maifolds or what, hoping someone > have have some experiance as to wether it would work or not? > Cheers > James |
#5
|
|||
|
|||
JBweld on intake manifold?
On Thu, 06 Apr 2006 11:07:55 -0500, 51_racing >
wrote: >james wrote: >> I have an old v8 motor with an inlet manifold that is a bit worse for >> wear. It's around a couple of the water jacket areas on the face that >> is against the heads, it had corroded a bit to the point that water >> will easily leak past. >> This is a pic of the worst part, >> http://members.iinet.net.au/~jkaufman/manifold.jpg >> >> I can't afford a new manifold so i was wondering if jbweld would hold >> up if i used to to make sure it's nice and flat along the sealing >> parts, there is no actual holes through the water jacket ect. >> >> Looking at the specs it states up to 500deg F, i have no idea what >> temp it would get up to on an intake manifold, but they do say >> "Not recommended for use on manifolds, exhaust systems, and other >> engine components which normally operate at temperatures above 500° >> F." >> >> Don't know if that is just exhaust maifolds or what, hoping someone >> have have some experiance as to wether it would work or not? >> Cheers >> James > >It may work, but let me ask you this, what is that manifold from? >Is it an old car that needs a numbers matching manifold for any reason? >The reason I ask is this, if it's a small block chevy manifold (can't >really tell from the pic) you could pick a stock one up for next to >nothing. The best performing ones can be found for $25 pretty easily at >a junkyard, and if you know some car guys, chances are good one of them >has one laying around that you could get for nothing. Nah it's a australian holden v8 motor sorry, aftermarket manifold. They are still worth a couple hundred second hand which is why i can't afford to find another one. |
#6
|
|||
|
|||
JBweld on intake manifold?
> > Nah it's a australian holden v8 motor sorry, aftermarket manifold. > They are still worth a couple hundred second hand which is why i can't > afford to find another one. I don't know for sure, but isn't Holden just a derivative of Chevrolet? They may be different entirely, but I'm pretty sure there was some sort of relationship between those two companies. You might be able to try a Hollander's exchange manual and see what might fit from something else. You might be surprised. JW |
#7
|
|||
|
|||
JBweld on intake manifold?
I would give it a try. Just make sure you get it flat again. Your intake
temp. gets no where near 500 . I have seen some bad looking manifolds repaired with JB weld. Good luck. Scott |
#8
|
|||
|
|||
JBweld on intake manifold?
james wrote:
> I have an old v8 motor with an inlet manifold that is a bit worse for > wear. It's around a couple of the water jacket areas on the face that > is against the heads, it had corroded a bit to the point that water > will easily leak past. > This is a pic of the worst part, > http://members.iinet.net.au/~jkaufman/manifold.jpg > > I can't afford a new manifold so i was wondering if jbweld would hold > up if i used to to make sure it's nice and flat along the sealing > parts, there is no actual holes through the water jacket ect. > > Looking at the specs it states up to 500deg F, i have no idea what > temp it would get up to on an intake manifold, but they do say > "Not recommended for use on manifolds, exhaust systems, and other > engine components which normally operate at temperatures above 500° > F." > > Don't know if that is just exhaust maifolds or what, hoping someone > have have some experiance as to wether it would work or not? > Cheers > James I used JB Weld to repair a busted head-bolt boss on an old Ford 200c.i. head and it worked fine. Considering the fact that this was for a head bolt that is under a lot of tourque, I'd say resurfacing a manifold to repair corrosion damage would be a cinch. I've got stuff that I fixed with JBW that is over 25 years old and still holding. In fact, if you mix it well & let it cure for a week or more before you finish working on it, you can drill, mill & lathe JB Weld. It really does get that hard. As others have said, make sure you get a nice clean area to work on and be careful in mixing the epoxy. My personal favorite is abrasive media blasting to really clean metal parts safely, but grinding and chemical cleaning is almost as good. Take your time grinding. 'Patience is a virtue' in this case like you wouldn't believe. JB Weld gets really hard, but it's not the same hardness as metals so go slower than you'd probably like to. Avoid acid-dipping to clean anything, it'll etch every part of your manifold inside & out AND it can make some things brittle. Rough inner castings in manifolds are not great for airflow. You didn't say if your manifold is aluminum or cast iron so I'll assume by "Old V8" that it's cast iron. Blast that with Aluminum Oxide and it'll look like it just came from the foundry. Cast iron is actually the same color as pewter when it's freshly blasted - really pretty! If your manifold is aluminum, go with glass bead. Aluminum oxide will tear into aluminum casting so fast you might rip a hole in your ($$$) manifold before you realise it. Then you'll be using a big old snot of JB Weld to fill the hole you made and you don't want that. Good luck, - JJ |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Cracked intake manifold - How do I get my reimbursement? | Erik Hovind | Ford Mustang | 1 | February 19th 06 12:00 AM |
AWA [DEMAND] ford 4.6l intake manifold | [email protected] | General | 0 | December 27th 05 01:51 PM |
question about intake manifold & coolant | Scotter | Ford Mustang | 3 | October 22nd 05 02:10 AM |
QUESTION: 1996 GT Intake Manifold | EADGBE | Ford Mustang | 3 | June 26th 05 08:43 PM |
1999 3.1 intake manifold replacement questions | [email protected] | Technology | 4 | February 7th 05 10:26 PM |