Biker.ie Forums Irish Motorbike Enthusiasts
Home Events Bikes for Sale Mobile Style Motorbike Chat Racing Rideouts » Register free!

Go Back   Biker.ie Forums > General > General Bike Chat

Reply
 
  #1  
Old 31st March 2017, 07:53 PM
Japcati's Avatar
Japcati Japcati is offline
Biker.ie old-skool
 
Biker.ie Member No. 35355
5,865 posts since Sep 2015
Motorbike: 996/R1/S1000rr
Modifications: loads
Default Harpic for yer Headers.

Supposedly it works a treat......



Reply With Quote
  #2  
Old 31st March 2017, 07:58 PM
Paranoid android Paranoid android is offline
Supporter
 
Biker.ie Member No. 35671
1,395 posts since Jan 2016
Default Re: Harpic for yer Headers.

Christ !!
Reply With Quote
  #3  
Old 31st March 2017, 08:06 PM
eyore's Avatar
eyore eyore is offline
Serial buyer of keepers.
 
Biker.ie Member No. 13184 from Wesht Clare
9,374 posts since Nov 2008
My Motorcycle Pics Motorbike: TBS, Bavarian Rocket.
Modifications: Extra Db and polish.
Default Re: Harpic for yer Headers.

Surely ta god there is something really expensive you can buy from a bike shop in Timbaktu?
Reply With Quote
  #4  
Old 31st March 2017, 08:06 PM
addicted to rage's Avatar
addicted to rage addicted to rage is offline
Pennyless bastard
 
Biker.ie Member No. 6566 from Me Gaff
12,172 posts since Aug 2007
Motorbike: Zrx1200r,Xrv 750
Modifications: to many
Default Re: Harpic for yer Headers.

seems to work well ... has to be a downside
Reply With Quote
  #5  
Old 31st March 2017, 08:37 PM
jellikit's Avatar
jellikit jellikit is offline
Agent of Fortune
 
Biker.ie Member No. 6420 from Co. Wexford
4,472 posts since Aug 2007
Motorbike: Honda VFR 800 fi
Default Re: Harpic for yer Headers.

Originally Posted by addicted to rage
seems to work well ... has to be a downside
Harpic has a lot of hydrochloric acid in it. I'd say it would fuck up a stainless system in no time.
Reply With Quote
  #6  
Old 31st March 2017, 08:56 PM
Vjmc.Cork's Avatar
Vjmc.Cork Vjmc.Cork is offline
Biker.ie old-skool
 
Biker.ie Member No. 24081 from Near Wild Heaven
7,777 posts since Sep 2010
Motorbike: Chainsaw/bike hybrid
Modifications: White Wall tyre
Default Re: Harpic for yer Headers.

Originally Posted by jellikit
Harpic has a lot of hydrochloric acid in it. I'd say it would fuck up a stainless system in no time.
Be alright for tarting up a yoke you're selling but I wouldn't use it too often
Reply With Quote
  #7  
Old 31st March 2017, 09:15 PM
Japcati's Avatar
Japcati Japcati is offline
Biker.ie old-skool
Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 35355
5,865 posts since Sep 2015
Motorbike: 996/R1/S1000rr
Modifications: loads
Default Re: Harpic for yer Headers.

Originally Posted by Vjmc.Cork
Be alright for tarting up a yoke you're selling but I wouldn't use it too often
What would be good for bring old dirty headers back to new looking again then?
Reply With Quote
  #8  
Old 31st March 2017, 09:20 PM
iano's Avatar
iano iano is offline
<< SAVAGE LID
 
Biker.ie Member No. 4646 from Back of the Wolfpack..Try
26,431 posts since Feb 2007
Motorbike: 2 Suzi's
Modifications: Sticker and Iba 35959
Default Re: Harpic for yer Headers.

Elbow grease. ...
Reply With Quote
  #9  
Old 31st March 2017, 09:26 PM
Yoda1965's Avatar
Yoda1965 Yoda1965 is offline
Supporter
 
Biker.ie Member No. 26401 from Portarlington, Laois
274 posts since May 2011
Motorbike: CX500c & R1200GS
Modifications: a few :)
Default Re: Harpic for yer Headers.

Wow, great stuff :)
Reply With Quote
  #10  
Old 31st March 2017, 09:28 PM
nednedned's Avatar
nednedned nednedned is offline
Supporter
 
Biker.ie Member No. 5106 from Dubzland
2,168 posts since Apr 2007
Motorbike: BANDIT 600 x2
Modifications: Air hornes-move cager
Default Re: Harpic for yer Headers.

Looks like he doesn't clean it too often. Wd40 keeps mine clean.
Reply With Quote
  #11  
Old 31st March 2017, 10:30 PM
moose loose aboot the hoose's Avatar
moose loose aboot the hoose moose loose aboot the hoose is offline
Supporter
 
Biker.ie Member No. 31649 from Dublin 5
1,222 posts since Jun 2013
Motorbike: Suzuki GSXR750 K8
Modifications: Many Mods how I like it!
Default Re: Harpic for yer Headers.

Use it once then the wd40 from then on
Reply With Quote
  #12  
Old 1st April 2017, 11:28 AM
jp biker's Avatar
jp biker jp biker is offline
Veteran Racer
 
Biker.ie Member No. 36294 from the big smoke
2,784 posts since Jun 2016
Motorbike: bicycle
Modifications: big belly
Default Re: Harpic for yer Headers.

Originally Posted by iano
Elbow grease. ...

get somebody too do it for you
Reply With Quote
  #13  
Old 1st April 2017, 01:17 PM
proto proto is offline
WSB Contender
 
Biker.ie Member No. 25910
525 posts since Apr 2011
Motorbike: CBR900RRW
Default Re: Harpic for yer Headers.

Harpic (ph 4) is about 10 times less acidic than lemon/vinegar (ph 3) (http://rb-msds.com.au/uploadedFiles/...%20SD%20AU.pdf)

It will give off gas & eats away at the metal
Reply With Quote
  #14  
Old 1st April 2017, 02:10 PM
eyore's Avatar
eyore eyore is offline
Serial buyer of keepers.
 
Biker.ie Member No. 13184 from Wesht Clare
9,374 posts since Nov 2008
My Motorcycle Pics Motorbike: TBS, Bavarian Rocket.
Modifications: Extra Db and polish.
Default Re: Harpic for yer Headers.

Originally Posted by iano
Elbow grease. ...
I suppose Crossans sell it.
Reply With Quote
  #15  
Old 1st April 2017, 08:52 PM
sidecarwillie sidecarwillie is offline
WSB Contender
 
Biker.ie Member No. 19952
613 posts since Jan 2010
Motorbike: harris matchless
Modifications: after market silencer
Default Re: Harpic for yer Headers.

Originally Posted by eyore
I suppose Crossans sell it.
They do, its on the shelf beside the large tins of compression.
Reply With Quote
  #16  
Old 7th February 2018, 06:08 AM
BigDiggity's Avatar
BigDiggity BigDiggity is offline
Supporter
 
Biker.ie Member No. 31096 from Dublin/Belfast
1,058 posts since Mar 2013
Motorbike: R1200GS and Speed Triple
Modifications: Loud noises.
Default Re: Harpic for yer Headers.

Lads just a quick question on this,

The active ingredient in Harpic is Hydrochloric Acid, one thing about Hydrochloric acid is that it continues to "work" (ie, eat into the metal) after being rinsed and dried off.

Apparently heat can slow it down or stop it which is handy as it'll be used on a header pipe.

I'm planning to use this on my header pipe today and straight afterwards going to blast a load of ACF-50 on it and run the engine for a few mins this evening to heat it up...

Anyone had any negative results or experiences using this shit on header pipes a few weeks after?
Reply With Quote
  #17  
Old 7th February 2018, 08:36 AM
cracker boy's Avatar
cracker boy cracker boy is offline
Ritz & Tuc crackers rock!
 
Biker.ie Member No. 33993 from Naas, Co.Kildare
1,948 posts since Oct 2014
My Motorcycle Pics Motorbike: R1200GSA
Modifications: 19st of ballast!!!
Default Re: Harpic for yer Headers.

No bad results.

It works fine
Reply With Quote
  #18  
Old 7th February 2018, 08:38 AM
cracker boy's Avatar
cracker boy cracker boy is offline
Ritz & Tuc crackers rock!
 
Biker.ie Member No. 33993 from Naas, Co.Kildare
1,948 posts since Oct 2014
My Motorcycle Pics Motorbike: R1200GSA
Modifications: 19st of ballast!!!
Default Re: Harpic for yer Headers.

Originally Posted by BigDiggity
Lads just a quick question on this,

The active ingredient in Harpic is Hydrochloric Acid, one thing about Hydrochloric acid is that it continues to "work" (ie, eat into the metal) after being rinsed and dried off.

Apparently heat can slow it down or stop it which is handy as it'll be used on a header pipe.

I'm planning to use this on my header pipe today and straight afterwards going to blast a load of ACF-50 on it and run the engine for a few mins this evening to heat it up...

Anyone had any negative results or experiences using this shit on header pipes a few weeks after?

If you want, you can practice on mine!!
Reply With Quote
  #19  
Old 7th February 2018, 09:09 AM
BigDiggity's Avatar
BigDiggity BigDiggity is offline
Supporter
 
Biker.ie Member No. 31096 from Dublin/Belfast
1,058 posts since Mar 2013
Motorbike: R1200GS and Speed Triple
Modifications: Loud noises.
Default Re: Harpic for yer Headers.

Originally Posted by cracker boy
No bad results.

It works fine
Cheers, already started, first snag, one of the header bolts is seized. Liberally applied acf50 and will leave it for a few hours.
Reply With Quote
  #20  
Old 7th February 2018, 09:38 AM
RTV's Avatar
RTV RTV is offline
Supporter
 
Biker.ie Member No. 34969 from Cork
1,392 posts since Jul 2015
Motorbike: The all mighty GS
Default Re: Harpic for yer Headers.

Yup, I've seen this practices over the years and never heard of any secondary effects.

Haven't tried it myself but tons of vids out there showing what seems to be "magic" pretty much :P
Reply With Quote
Reply

  Return to Main Topic Biker.ie Forums > General > General Bike Chat

Tags
harpic, headers, yer



Support Biker.ie


Forum RSS news feed Main Biker.ie RSS news feed