Alright, i have recieve numerous answers on this topic on other forums and just looking for advice...My Setup is going to be a built bottom end w/ forged rods & pistons using a b18a bottom end in my ls/vtec setup. Now im planning on boosting this at about 6-7 psi for now..and then 15+psi after i get it sleeved next year sometime...Now the question lies the the block girdle..whether i machine one from a gsr or pick up the z10 racing ls/vtec pre machined girdle...Now many have said i dont need this, but why imo would they put it on a gsr if honda though the motor didnt need it...My ?'s are is it worth the money...and why would you recomend it or not recomned it..Im planning on reving my motor around 8k-8500 w the stock crank etc...Ill probably get the crank polished when the block gets sleeved...but is the girdle a need? thanks

 

defiantely girdle, it's not that much money considering all that you are doing, it's pretty much a no-brainer

 

get the hybrid garage one that is the best one plus it bolts right up as where as a gsr and z10 u have to machine to fit

 

Wow, thats a pretty step price for just a girdle that is direct bolt up. $390 bucks shipped is most likely a little out of my range and would rather spend the money on stronger rods and better pistons...although if i were to buy one it would definatly be that one....but other than that i was mostly looking for opinions on why to use it vs no use...thanks again

 

Worth it only if you add it correctly.
~machine the dowels in the main caps (both oem and Z-10)
~check line bore with girdle torqued in place.
Otherwise it will just take up space in your oil pan and look pretty.

A girdle is not really needed with the rpm range you listed. Good rods and balancing is more important. IMO


[Modified by SLPR, 12:44 PM 3/31/2003]

 

slpr...what rev range would you suggest getting the girdle then...upwards of 9000+.....thanks and keep the info coming!

 

SLPR (12:56 PM 4/1/2003): Yes, 9000rpm and up. An occational 9000 zing would probably not hurt a properly build bottom end w/o a girdle.
Mainly you want to girdle a bottom end if it sees high loading for extended periods of time.
SLPR (12:59 PM 4/1/2003): I am not using a girdle and use 8500 as my rpm limit. I feel it is more important to pay attention to the bluepreinting and balance of the rotating assembly. Attention here will help your engine live longer.

Girdles are a "support" so to speak. But like I said they won't do any supporting unless they are installed correctly...which adds more complexity and cost.

 

my friend spins his drag car to like 9500 with a stock crank (untouched) and no girdle and he hasnt spun a bearing or anything crazy yet

 

You pay for what you get. By the time you pay for the Z10 part, have your mains doweled and all that, you're nearly at the price of the HybridGarage part, AND, the Z10 is only 3 main, the HG part is all 5 main caps. I wish they came out with this 4 months sooner!

 

coo coo...keep the info coming on your experiences!!!

 

I belive that Z-10 is coming out with a five main girdle sometime soon, I believe I saw it in a thread that I cant find now, with their dry sump system.

I don't really think it matters what girdle is used for a high RPM (I refer to high RPM as 7000 and up) as long as one is used. The crank is experiencing intense amounts of harmonics everytime that you push RPM, crank harmonics allow for spontaneous slight shifts in the crank, this is what wears on the bearings. I think that there would be alot less LSVTECs with spun bearings if more girdles were used.

And this is a link about molybdenum, and it's lubrication properties, but it also gives a little insight into bearing wear.

http://www.bobistheoilguy.com/moly1.html

 

nice nice...keep you info coming. Hybrid garage makes a 5 main one already...10x 's better than z10..or so ive heard on other forums