I have a B20Vtec that i'm about to build. I have been running nitrous on it for a little while and everything seems fine for now. I am getting aftermarket pistons to help with the abuse of the nitrous. I just wanted to know if B20 rods are strong enough to handle a street driven 100 shot and occasional 125 shot for track use. If not then i will have to save a little more money and get some aftermarket rods.

 

100 shot dry would be fine!
125 is really pushing your luck and i would not feel sorry for you when you blow a rod and bust a hole in your block.

don't be cheap when your going with a large shot +100.....

 

I would be worried about burnt valves before pistons.

 

I'd say a wet shot would be a bit safer if you currently are not running one. Other than that dump a bunch a fuel in it and cross your fingers I'm sure the rods would be straight, those sleeves are notoriously thin though, as I'm sure you know with a b20.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pooptooth &raquo;</TD></TR><TR><TD CLASS="quote">I'd say a wet shot would be a bit safer if you currently are not running one. Other than that dump a bunch a fuel in it and cross your fingers I'm sure the rods would be straight, those sleeves are notoriously thin though, as I'm sure you know with a b20. </TD></TR></TABLE>thats what i'd do, if i ever (which i wouldn't) use NO2, oh and make sure it dosent blow the welds on your cast aluminum intake manifold

 

OK the B20 sleeves are NOT thinner. They are actually thicker then the LS sleeves. Jeff from HMT measured himself. Because of the single cast design, this makes the sleeves weaker overall.

Blaze

 

Anyone else?

 

TTT

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Manuel &raquo;</TD></TR><TR><TD CLASS="quote">b20 rod's sham as LS rods perte strong can haned 190WHP allmotor</TD></TR></TABLE>

You drunk right now?

 

If your concerned about the strength of B20 or LS rods, a cheap solution would be to shot peen and polish the stockers. This can improve strenght by as much as 100%. Also replace the rod bolts with some ARP parts.

 

Sick, so if i shot-peened them and got some arp rod bolts then i should be fine?

 

I must ask bserieshatch how long do you expect the stock internals to last? when you are spraying 100 shot. I wouldnt worry about putting in new pistons when you have so many other things that you must take into consideration.(exp) piston rings,crank,rods,sleeves,main bearings,vavles,timing belt/chain,ect. the list could go on.So no need in buying a new set of 500-1000 pistons when you could end up needing to buy a motor after spraying 100-125 on stock internals.

 

several people on this site have run a 100 shot on stock internals with much success.

 

anyone else have any experience with B20's and nitrous?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Deetz &raquo;</TD></TR><TR><TD CLASS="quote">If your concerned about the strength of B20 or LS rods, a cheap solution would be to shot peen and polish the stockers. This can improve strenght by as much as 100%. </TD></TR></TABLE>

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