fixing welds??
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From: Nashua, NH, USA
fixing welds??
my junk *** mani has cracked on the welds. how hard is it to fix an how much? also if I got another log mani will it just bold right in or would I have to remake the dp?
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From: Nashua, NH, USA
Re: fixing welds?? (DrivinVtec)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mykizism;1460928 »</TD></TR><TR><TD CLASS="quote">once a weld cracks, it cannot be rewelded and expected to stay uncracked.. it will eventually crack again. the metal is compromised once a weld cracks like that,
if you reweld it, it will recrack again, and again and again..</TD></TR></TABLE>
tue?
if you reweld it, it will recrack again, and again and again..</TD></TR></TABLE>
tue?
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From: Lincoln, Ne, USA
Re: fixing welds?? (DrivinVtec)
If you have some fab skills its pretty easy....grind out the old welds and weld it back up again...If not its still a fairly easy repair so any good welding shop should be able to help you out. Although you will need to clean out the inside or you'll get some contamination.
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From: I heart tool, US
Re: fixing welds?? (k24em2)
h<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k24em2 »</TD></TR><TR><TD CLASS="quote">If you have some fab skills its pretty easy....grind out the old welds and weld it back up again...If not its still a fairly easy repair so any good welding shop should be able to help you out. Although you will need to clean out the inside or you'll get some contamination.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DrivinVtec »</TD></TR><TR><TD CLASS="quote">thats what the machine shop said t do. what do you think it will cost? ill run it threw parts washer. that should do huh?</TD></TR></TABLE>
Shouldnt cost much I imagine. Maybe 20 minutes worth of work at most (from the pics). BTW, PM'd ya.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DrivinVtec »</TD></TR><TR><TD CLASS="quote">thats what the machine shop said t do. what do you think it will cost? ill run it threw parts washer. that should do huh?</TD></TR></TABLE>
Shouldnt cost much I imagine. Maybe 20 minutes worth of work at most (from the pics). BTW, PM'd ya.
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From: LI, NY
i generally cut them down at the crack with an angle grinder/rebevel it the best i can.
I will sand blast it inside and out and do my normal procedure on it as if i was starting from scratch. Most headers or anything ive repaired were undercut or overheated. Some i knew would be fine other were damaged beyond repair.
Just a note, if your header has a cut flange for expansion (which this one was not. Make sure you either bolt it to a head or jig holding all bolt holes in place or else the flanges will pull together.
If its too hard to reach at on the head (vw stuff can be this way) I will bolt it up and mig a few tacks on the flange at the cuts then weld it bolted to an aluminum flange. I had turbo flanges and head flanges cut in 1/2" aluminum to absorb the heat from the actual piece being welded.
I will sand blast it inside and out and do my normal procedure on it as if i was starting from scratch. Most headers or anything ive repaired were undercut or overheated. Some i knew would be fine other were damaged beyond repair.
Just a note, if your header has a cut flange for expansion (which this one was not. Make sure you either bolt it to a head or jig holding all bolt holes in place or else the flanges will pull together.
If its too hard to reach at on the head (vw stuff can be this way) I will bolt it up and mig a few tacks on the flange at the cuts then weld it bolted to an aluminum flange. I had turbo flanges and head flanges cut in 1/2" aluminum to absorb the heat from the actual piece being welded.
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From: Illinois
Re: fixing welds?? (k24em2)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k24em2 »</TD></TR><TR><TD CLASS="quote">If you have some fab skills its pretty easy....grind out the old welds and weld it back up again...If not its still a fairly easy repair so any good welding shop should be able to help you out. Although you will need to clean out the inside or you'll get some contamination.</TD></TR></TABLE>
Just curious why would you grind out the old weld, rather then just cleaning it ?
Just curious why would you grind out the old weld, rather then just cleaning it ?
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From: Auburn, wa, usa
I fixed manifolds like that before. I sand blast them, wash them and then reweld while they are bolted to a head or a jig.
About 1 hr of work, so your looking at about $60-$100 depending on shop labor prices where you are at.
About 1 hr of work, so your looking at about $60-$100 depending on shop labor prices where you are at.
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From: Illinois
Re: (onefstek)
We charge about $20 for other companies manifolds, depending on how bad the crack is, and where its at. If its far away from the head flange and its a smaller weld, you don't need to bolt it down. As for cleaning, we never had an issue with just wire wheeling the weld then using acetone.
As for it cracking again, most likely other welds will crack. Usually depending on the manifold, if it cracks once, its going to crack again. We just had two ram horns come in with cracked wastegate elbows ( one fell completely off, both manifolds were made by an online company ) , as an example of what can cause the cracking, on both these manifolds, the fitment from the elbow to the manifold was bad, they just used a straight piece and did not bevel the pipe to fit well. Stuff like this will cause cracking.
As for your manifold being cracked, check to see if the head flange is not warped. From my experience's log manifolds are the first to crack, there are only 4 pieces of pipe and the heat really does not have anywhere to go.
As for the warranty, this is from his site
all manifolds are sold as is. slight modification may be required to fit manifolds and downpipes. manifolds and downpipes are sold with a 2 year warranty to the original owner. any and all modifications including but not limited to ceramic/thermal coatings, thermal wraps, paint, porting void the warranty unless done through hermsfab.com . all products are meanr for off road purposes.
As for it cracking again, most likely other welds will crack. Usually depending on the manifold, if it cracks once, its going to crack again. We just had two ram horns come in with cracked wastegate elbows ( one fell completely off, both manifolds were made by an online company ) , as an example of what can cause the cracking, on both these manifolds, the fitment from the elbow to the manifold was bad, they just used a straight piece and did not bevel the pipe to fit well. Stuff like this will cause cracking.
As for your manifold being cracked, check to see if the head flange is not warped. From my experience's log manifolds are the first to crack, there are only 4 pieces of pipe and the heat really does not have anywhere to go.
As for the warranty, this is from his site
all manifolds are sold as is. slight modification may be required to fit manifolds and downpipes. manifolds and downpipes are sold with a 2 year warranty to the original owner. any and all modifications including but not limited to ceramic/thermal coatings, thermal wraps, paint, porting void the warranty unless done through hermsfab.com . all products are meanr for off road purposes.
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From: Nashua, NH, USA
HERMSFAB SAID HE'LL PICK UP THE TAB TO GET IT FIXED.!!! awsome guy. Ive always had good luck with him. 2 thumbs up. the machine shop whos building the motor is going to fix it. $60 for everything. thats not to shabby. )
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From: Illinois
Re: (DrivinVtec)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DrivinVtec »</TD></TR><TR><TD CLASS="quote">HERMSFAB SAID HE'LL PICK UP THE TAB TO GET IT FIXED.!!! awsome guy. Ive always had good luck with him. 2 thumbs up. the machine shop whos building the motor is going to fix it. $60 for everything. thats not to shabby. )</TD></TR></TABLE>
Not bad at all. I have dealt with herms fab before, he was good to deal with.
Not bad at all. I have dealt with herms fab before, he was good to deal with.
threes
Joined: Nov 2003
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From: Hot Hot heat, AZ
Re: (RCautoworks)
what these guys before me forgot to mention is that you have to stop the crack before you weld it back up. find the end of the crack and drill through the metal, grind away material surrounding the crack to achieve penetration, clean and weld.
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