Chipmunk Posted July 23, 2004 Share Posted July 23, 2004 Went full decat a few days ago , and the current plugs in place are HKS S40's Are these going to be ok to carry on using , or can anyone recommend something more suitable ? Thanks George Quote Link to comment Share on other sites More sharing options...
Justin Posted July 23, 2004 Share Posted July 23, 2004 Denso Iridiums IK24's I used NGK PFR7's until last week when we found detonation on the dyno so went to the Denso's. Det stopped. NGK's cost me £120 by the way and they should be about £50! Don't know about the HKS's mate so can't say. Quote Link to comment Share on other sites More sharing options...
Jake Posted July 23, 2004 Share Posted July 23, 2004 IK24s might be a bit overkill. I've been using IK22s since decatting and they're fine. IK24s get fouled more easily than the IK22s Quote Link to comment Share on other sites More sharing options...
Jake Posted July 23, 2004 Share Posted July 23, 2004 By the way George, HKS S40i plugs are actually rebadged Denso IK24s, so you shouldn't need to change them anyway (provided they're alright of course) Quote Link to comment Share on other sites More sharing options...
outatime Posted July 23, 2004 Share Posted July 23, 2004 HKS S40i is the equivalent of Denso Iridium IK24. Some go for IK24s for a de-cat, i'm running 22's and have no problems. If you are having no problems with the S40 plugs, particularly with cold starting, stick with them. Quote Link to comment Share on other sites More sharing options...
outatime Posted July 23, 2004 Share Posted July 23, 2004 ^Beat me^ Quote Link to comment Share on other sites More sharing options...
Jake Posted July 23, 2004 Share Posted July 23, 2004 Originally posted by outatime ^Beat me^ Ooooh kinky! I'll pass, thanks Quote Link to comment Share on other sites More sharing options...
outatime Posted July 23, 2004 Share Posted July 23, 2004 Oh well If you don't ask, you don't get Quote Link to comment Share on other sites More sharing options...
Chipmunk Posted July 23, 2004 Author Share Posted July 23, 2004 Thanks guys - music to my ears....regarding the plugs not the beatings I did a search on here but nothing really showed up for the HKS plugs, and I was certainly not aware that they're Denso's in disguise. As the HKS plugs are only just over 2 months old I'll carry on with them for now. When they were originally fitted , the plan wasn't to go full decat. Glad I did now.....neighbours aren't though Thanks again guys Quote Link to comment Share on other sites More sharing options...
Nic Posted July 23, 2004 Share Posted July 23, 2004 Hi George The S40i's may be okay depending on the boost you are running, I use the cooler HKS S45i's at 1.25bar. If you get slight miss fire at WOT/max boost you will need to go for a cooler grade of plug. regards Quote Link to comment Share on other sites More sharing options...
Justin Posted July 23, 2004 Share Posted July 23, 2004 Originally posted by Jake IK24s get fouled more easily than the IK22s Where did you hear this out of intrest mate? Quote Link to comment Share on other sites More sharing options...
Jake Posted July 23, 2004 Share Posted July 23, 2004 Originally posted by Justin Where did you hear this out of intrest mate? Well, about 20 years ago in bike racing and tuning actually. I'm sure the info is still good though. Colder plugs are better/safer for more highly tuned engines, we all know that, right? Q: So why don't we all just use colder plugs? A: Because they get fouled up too easily and then provide a poor idle and/or cold starting problems. Feel free to disagree but this has always been my understanding. Quote Link to comment Share on other sites More sharing options...
Justin Posted July 24, 2004 Share Posted July 24, 2004 Originally posted by Jake Well, about 20 years ago in bike racing and tuning actually. I'm sure the info is still good though. Colder plugs are better/safer for more highly tuned engines, we all know that, right? Q: So why don't we all just use colder plugs? A: Because they get fouled up too easily and then provide a poor idle and/or cold starting problems. Feel free to disagree but this has always been my understanding. Blimey they had Denso Iridium IK24's on racing bikes 20 years ago... awesome. Cheers for the info. Quote Link to comment Share on other sites More sharing options...
Jake Posted July 24, 2004 Share Posted July 24, 2004 Originally posted by Justin Blimey they had Denso Iridium IK24's on racing bikes 20 years ago You know what I meant. Quote Link to comment Share on other sites More sharing options...
Raoul H Posted July 24, 2004 Share Posted July 24, 2004 I've used ik24s for a while. Put a new set in recently. Recommended. Rgds, Quote Link to comment Share on other sites More sharing options...
tango Posted July 24, 2004 Share Posted July 24, 2004 Hi guys, where do you get those IK24's, are they expensive, are they better then the stock one I have with stock motor? cheers Quote Link to comment Share on other sites More sharing options...
Raoul H Posted July 25, 2004 Share Posted July 25, 2004 I got my last set (about £70) from a BBS member (Alex Holdroyd) who had sourced as few sets. But I am sure any of the traders on here would be able to source them. Rgds, Quote Link to comment Share on other sites More sharing options...
Jake Posted July 25, 2004 Share Posted July 25, 2004 Originally posted by tango Hi guys, where do you get those IK24's, are they expensive, are they better then the stock one I have with stock motor? cheers You need IK22s for a stock motor. I got mine from the local motor factors. They were just over £10 each. Quote Link to comment Share on other sites More sharing options...
tango Posted July 26, 2004 Share Posted July 26, 2004 Thanks guys, but I have turn the boost up to 15psi, is that still ok, and whats the different between ik22s, ik24s, thanks. Quote Link to comment Share on other sites More sharing options...
LeeT Posted July 26, 2004 Share Posted July 26, 2004 Originally posted by Jake You need IK22s for a stock motor. I got mine from the local motor factors. They were just over £10 each. IK 22's are recommended for BPU supras. if any one wants any TerryS from VORTEX was getting these at a great price. Quote Link to comment Share on other sites More sharing options...
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