Are titanium bolts stronger than OEM bolts?
What bolts are you talking about? Seat mount bolts? Suspension bolts? Engine mount bolts?
I highly doubbt you actually need titanium bolts for anything. . . .
I highly doubbt you actually need titanium bolts for anything. . . .
I saw a post on S2kI a while back where someone replaced all the bolts on their S2000 with Ti bolts. I think it saved around 100 pounds.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rdriver »</TD></TR><TR><TD CLASS="quote">I saw a post on S2kI a while back where someone replaced all the bolts on their S2000 with Ti bolts. I think it saved around 100 pounds.
</TD></TR></TABLE>
and cost a pretty penny
</TD></TR></TABLE>and cost a pretty penny
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I did something like that on my MTB a while back and it set me back well over $100. I can't even think of doing it to a caR... thousands of dollars!
Not worth it for a non-competition car.
Not worth it for a non-competition car.
I meant suspension bolts, brake caliper bolts. Any bolt. Are all the OEM the same grade?
I thought I could replace a few here and there as time goes by
not all at once. I have Ti bolts for my Benen Strut bar, but not sure if the Ti is stronger than what they gave me.
I thought I could replace a few here and there as time goes by
not all at once. I have Ti bolts for my Benen Strut bar, but not sure if the Ti is stronger than what they gave me.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso »</TD></TR><TR><TD CLASS="quote">Not worth it for a non-competition car.</TD></TR></TABLE>
I have to agree, unless you have serious plans for the car, then it's not really worth it.
I have to agree, unless you have serious plans for the car, then it's not really worth it.
TI is supposed to be lighter.. there would be different grades of TI i supose.. as far as strenght and which one is stronger - i don't know the details on that.
if you replace factory part, replace bolts only if cracked.. aftermarket parts usually supply their own, but if its grade 10 (they acually say 10 on top of the bolt), you could still use honda bolts as long as its the same size. for example, arp headstuds are supposed to be stronger and can be re-used or.. there are stronger bolts for connecting rods..
if you replace factory part, replace bolts only if cracked.. aftermarket parts usually supply their own, but if its grade 10 (they acually say 10 on top of the bolt), you could still use honda bolts as long as its the same size. for example, arp headstuds are supposed to be stronger and can be re-used or.. there are stronger bolts for connecting rods..
That brings something up...
Are Honda head bolts reusable? Friend of mine is rebuilding a 32v mod motor for his Mustang (junkyard turbo project
), and Ford bolts are apparently "torque to yield" and cannot be reused.
Are Honda head bolts reusable? Friend of mine is rebuilding a 32v mod motor for his Mustang (junkyard turbo project
), and Ford bolts are apparently "torque to yield" and cannot be reused.
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Yes almost all if not all Ford head bolts are torque to yield ( one time use only )
When you are torquing a bolt you are stretching it. Many times car manufacturers will tell you to torque it to a spec. then and extra 180 degrees ( for example) to get proper bolt stretch. You would use a torque angle gauge for that. ( This is why when building a race engine, people use rod bolt stretch gauges to measure the amount of stretch, an indicated amount used by team building engine or bolt manufacturer.)
When you are torquing a bolt you are stretching it. Many times car manufacturers will tell you to torque it to a spec. then and extra 180 degrees ( for example) to get proper bolt stretch. You would use a torque angle gauge for that. ( This is why when building a race engine, people use rod bolt stretch gauges to measure the amount of stretch, an indicated amount used by team building engine or bolt manufacturer.)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Splat »</TD></TR><TR><TD CLASS="quote">Ford bolts are apparently "torque to yield" and cannot be reused.</TD></TR></TABLE>
headbolts can be reused... however.. i wouldn't make it a habit.
headbolts can be reused... however.. i wouldn't make it a habit.
Ti will be lighter and stronger than the steel bolts (depending on the grade/density/treatment etc.). But for the most part it sounds pretty useless unless you are trying to squeeze that extra 10lbs saving out of a racing car. Honda bolts will work just fine.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D »</TD></TR><TR><TD CLASS="quote">
headbolts can be reused... however.. i wouldn't make it a habit. </TD></TR></TABLE>
new ones, especially like ARP, are not that expensive..
i agree..
headbolts can be reused... however.. i wouldn't make it a habit. </TD></TR></TABLE>
new ones, especially like ARP, are not that expensive..
i agree..
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mstewar »</TD></TR><TR><TD CLASS="quote">new ones, especially like ARP, are not that expensive..</TD></TR></TABLE>
Its around $120 for a set of new honda head bolts.
I had ~180K on my 91 integra and re-used the headbolts when i put on a 93 head/manifold. Retorqued them after some miles and they were fine. It was sort of a budget project in the first place.
As far as titanium bolts go, i just have to ask why... i do not think they will be stronger than the factory honda pieces (which arent all that cheap at $8-$12/each), especially with the use most of us put on the cars.
Its around $120 for a set of new honda head bolts.
I had ~180K on my 91 integra and re-used the headbolts when i put on a 93 head/manifold. Retorqued them after some miles and they were fine. It was sort of a budget project in the first place.
As far as titanium bolts go, i just have to ask why... i do not think they will be stronger than the factory honda pieces (which arent all that cheap at $8-$12/each), especially with the use most of us put on the cars.
Just to throw this in, replacing all the suspension bolts saves like 1 pound. 10 pounds on the car MAX maybe if you change out every one, but no, not 100. Honda bolts are made of iron, a very strong grade. They are (almost every bolt on the car) double head length and flange bolts. To brag..the caliper mounting bolts on an acura legend are probably wice as strong adn much higher quality than on an F150 brake caliper (the heavy 2 piston ones). We Honda owners are spoiled with good bolts, and if you have broken one, believe me, it gets much worse.
Most honda suspension bolts are grade 8.8 or higher, some 10.8 (thats a strength rating) and all of them are steel, flange head, zinc coated. some that have orange paint on them are made the same way.
And to sum up, yes titanium bolts are stronger than steel bolts, and there is not a bolt on your car that NEEDS to be upgraded, Honda bolts are pretty solid relative to all makes of cars.
Most honda suspension bolts are grade 8.8 or higher, some 10.8 (thats a strength rating) and all of them are steel, flange head, zinc coated. some that have orange paint on them are made the same way.
And to sum up, yes titanium bolts are stronger than steel bolts, and there is not a bolt on your car that NEEDS to be upgraded, Honda bolts are pretty solid relative to all makes of cars.
About titanium bolts
Titanium bolts come closest to steel in terms of strength but Ti is 47% lighter.
Note, although Ti bolts can be as strong as mild steel bolts,they are no substitute for high tensile steel bolts. Syntace sell some high quality Ti bolts and here is what they say about high-tensile bolt replacement:
Syntace titanium bolts are no substitute for bolts above 8.8 strength - recognizable through stampings of “10.9” or “12.9” on the screw head. If in doubt you have to assume that titanium bolts are NOT suited for the application to ensure your own safety.
Accordingly, if you need to replace 8.8 strength bolts, then make sure you are using the strongest and best Ti bolts you can get. DO NOT replace 10.9 or 12.9 bolts with Ti. The most common places to find high-tensile bolts on your bicycle will be holding the suspension pivots together.
- Aluminum bolts are very much weaker than steel and titanium when subjected to shear forces.
- Titanium bolts can be as strong as mild steel or stainless steel bolts. Titanium bolts are not as strong as high-tensile steel bolts.
- Don't be an idiot - use this bolt tuning guide at your own risk. If you are not 100% sure that a ti or alu bolt will not work then DO NOT replace the stock bolt. Bolt tuning is only saving you a handful of grams so its not worth doing anything risky for slight small savings (indeed, even if the savings were massive it would not be worth risking physical injury).
Titanium bolts come closest to steel in terms of strength but Ti is 47% lighter.
Note, although Ti bolts can be as strong as mild steel bolts,they are no substitute for high tensile steel bolts. Syntace sell some high quality Ti bolts and here is what they say about high-tensile bolt replacement:
Syntace titanium bolts are no substitute for bolts above 8.8 strength - recognizable through stampings of “10.9” or “12.9” on the screw head. If in doubt you have to assume that titanium bolts are NOT suited for the application to ensure your own safety.
Accordingly, if you need to replace 8.8 strength bolts, then make sure you are using the strongest and best Ti bolts you can get. DO NOT replace 10.9 or 12.9 bolts with Ti. The most common places to find high-tensile bolts on your bicycle will be holding the suspension pivots together.
- Aluminum bolts are very much weaker than steel and titanium when subjected to shear forces.
- Titanium bolts can be as strong as mild steel or stainless steel bolts. Titanium bolts are not as strong as high-tensile steel bolts.
- Don't be an idiot - use this bolt tuning guide at your own risk. If you are not 100% sure that a ti or alu bolt will not work then DO NOT replace the stock bolt. Bolt tuning is only saving you a handful of grams so its not worth doing anything risky for slight small savings (indeed, even if the savings were massive it would not be worth risking physical injury).
I also know from RC racing experience that even high quality titanium bolts are very easy to strip. Not as easy as Aluminum, but still many times softer than steel. Cannot comment on shear strength though.
We have a few ARP Bolt kits that we assemble here, If you have something in mind as far as brake or suspension hardware we can help!
http://www.ipgparts.com/store/IPG-Products/
http://www.ipgparts.com/store/IPG-Products/
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Sep 14, 2007 06:57 PM



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