how high can you rev out 99 ls rods shot peed with arp rod bolts everything fully balanced lsVtec with valve train? I meen every day daily driving.

 

with what you have said, i would think 1500 rpms past redline, maybe a little more would be safe. for daily drive thats what i would do.

 

And what he means by 1500 rpms is past the stock LS redline, not the stock redline of the head, so 6200 (i think) +1500= 7700ish? ive heard 8grand is generally safe for lsvtecs with those things done, depending on how well it was built.

Edit: By the way, it's called "Shot-peening".

 

thank you for adding that; i forgot. i believe b18a block (90-93) is 6.8k redline. b18b block is 7.2k. if you take your motor past your block's stock redline, 18a or 18b, please upgrade to a dohc vetec oil pump (preferably itr). your ls oil pump does not provie adequate flow/pressure at elevated rpms. remember, with all motor, your rods will take it. shoteening helps as this relieves some minor imperfections. while you cant take them to 10k+, they'll do fine. also, rod bolts are the weak point and you already have those. i also believe your stock ls crank will take it if its in good shape. wouldn't hurt to balance it though. if you really want to rip on your motor, a gsr or itr crank would be ideal. good luck!

 

I thought that the ls water pump provided too much flow at the higher rpms.....thus early failure. Thats why vtec pumps have more teeth on the wheel meaning a larger wheel.

 

that is true. vtec pumps (o&w) flow more because of increased flow requirements. ive never heard of an engine failure due to excessive water flow. i believe that would be a good thing (high flow h2o pump) because as oiling needs increase with rpms, so too do the cooling requirements. but, freak things have happened in the past.

 

make sure you have vtec oil and water pump.. you should be safe to high 8s.

 

https://honda-tech.com/zerothread?id=1082748

ls/vtec, balanced crank, arp stuff, and hes to 9200 daily.

 

ya I was hoping to be able to rev it out a little more I also have aebs head/main bolts and je pistons 9:1, typeR oil/water pumps. its gonna be boosted after I finish braking it in.

 

you will reach the limit of your valvetrain first, a bigger factor also will be the side-loading on the cylinder walls

mike

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BigHeadKid &raquo;</TD></TR><TR><TD CLASS="quote"> ive never heard of an engine failure due to excessive water flow.</TD></TR></TABLE>

The problem is not excessive water flow, the problem is cavitation. A pump has a certain operating range. Above this range, it will cavitate, causing turbulence. This reduces the efficiency dramatically, killing water flow.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BigHeadKid &raquo;</TD></TR><TR><TD CLASS="quote">upgrade to a dohc vetec oil pump (preferably itr). your ls oil pump does not provie adequate flow/pressure at elevated rpms</TD></TR></TABLE>

The VTEC and non-VTEC oil pump are the same. There are only 2 types of B series oil pumps, OBD2 and non-OBD2. The OBD2 have a mount for the crank fluctuation sensor, the non-OBD2 do not.

 

wow. didnt know that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drdisco69 &raquo;</TD></TR><TR><TD CLASS="quote">
The VTEC and non-VTEC oil pump are the same. There are only 2 types of B series oil pumps, OBD2 and non-OBD2. The OBD2 have a mount for the crank fluctuation sensor, the non-OBD2 do not.</TD></TR></TABLE>

Ty i was waiting for someone to say that! In 96 they changed the non vtec and vtec pumps to the same flow rate (96 or 98 i forgot which ones). Thats why when people say get a vtec oil pump it pisses me off cause they dont know what they are talking about. you could run a 99 LS oil pump and its the same thing as a 99 b16 oil pump or gsr oil pump. (except for the fact that the gsr one would have a mount for the crank angel sensor)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicflnum1 &raquo;</TD></TR><TR><TD CLASS="quote">Ty i was waiting for someone to say that! In 96 they changed the non vtec and vtec pumps to the same flow rate (96 or 98 i forgot which ones). Thats why when people say get a vtec oil pump it pisses me off cause they dont know what they are talking about. you could run a 99 LS oil pump and its the same thing as a 99 b16 oil pump or gsr oil pump. (except for the fact that the gsr one would have a mount for the crank angel sensor)</TD></TR></TABLE>


same part numbers as well?

 

i doubt it but many things have different part numbers and they still work and fit the same.

 

that may well be true, but what if your not a 96 or newer? a good friend of mine had an ls-v with ctr pistons and ctr cams. motor was balanced and blueprinted, and he blew it up in spectacular fashion. by the way, that was a 96 ls block with 96 b16 head. a machine shop determined that oil starvation was tthe problem. in other words the motor did not get enough oil at elevated rpms. i saw another ls-v, this time a 97 dc2 ls with 97 gsr head. he too fucked his motor up. this one was fully buil built (portflow head/ jg prepped block) oil pumptook **** and cost him his motor. i do not pull these things out of my *** just to sound like i know wtf im talking about.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicflnum1 &raquo;</TD></TR><TR><TD CLASS="quote">i doubt it but many things have different part numbers and they still work and fit the same. </TD></TR></TABLE>

If the part is exactly the same, there will be ONE part number, it would be a waste of time to do it differently.

 

it has the same part number...i checked on this yesterday

mike

 

im pritty shure there diffrent. if they where all the same then the timing belts would be the same and there not. the Ls one is longer or shorter I forgot but at one point I held tehm side by side and one was bigger.

 

timing belt length has nothing to do with oil pumps, its deckheight

mike

 

and the oil pump isn't directly connected through the tiiming belt..u may be thinking water pump

mike

 

yep, the water pump is turned by the timing belt, the oil pump is turned by the crankshaft.

 

as a reminder, dohc vtec engines have oil suirters in the bottom end and vtec operates off of oil pressure. they also turn far more rpms than non vtecs. therefore, they need more oil. i just dont believe that an ls oil pump will do the trick. it might, however, if you can modify the oil pump pulley with a prodrive gear, but why take that chance?