How High Can You Go
- Thread starter TAGURIT
- Start date
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MikeBergy
Blah blah blah....
lol, yeah, you haven't seen that compression boost additive at kragen?how do you get 11:1 and use stock pistonsme must know (just pore in a botle of compression boost or what )
milling to .06 would do it, but valve tap might become a problem. id definitely clay the motor before hand (like you should do anyway).
i dont know the answer to this question, but i will say you want to use a type r oil pump if you plan on going over the stock red line.
i dont know the answer to this question, but i will say you want to use a type r oil pump if you plan on going over the stock red line.
tartymctang2357
Grand High Wizard
changing the head doesn't change your redline, the thing that determins your redline is the rod stroke ratio of the block, a stock ls block (b18a/b) has a r/s of 1.54 a GOOD r/s ratio is typically 1.66-1.78, so unless you change the stroke of the crank or the length of the rod you should only rev it as high as the redline on a stock ls block which is 6500 any more and you risk damaging the bottom end, and if you don't take my advice at least change the rod bolts to arp that'll help with higher then stock redlining
lsvtec
GNU/Linux Evangelist
This is not true. Actually, with good rods you can rev the LS bottom end much higher. I had mine at 8200 reliably. R/S ratio determines side load and after you work out the amout of side load placed by a GSR bottom end, the increase to the LS is insignificant (IIRC it was less that 1% different). Before you quote answers like this make sure that they are correct.
tartymctang2357
Grand High Wizard
right and the side loading creats vibrations in the cylinders, thats why a gsr has a block girdle to help with those vibrations, a stock ls block doesn't have one
its not....the big reasons you cant overrev the ls:
oiling.
people try and use the standard ls oil pump, instead of the itr. the ls doesnt have oil squirters so the friction is increased...hence the melted piston problems
Its a piece of engine building fact that the longer the stroke. Thats kind of a cop out of a reason, but it works
even though lsvtec can be made reliable, you have to realize that you are using parts that were never meant to be together and shit does happen. timing belts might skip teeth, cam lift maybe too high....you never really know.
you are right to a point tarty, rs has something to do with it, but there are plenty of other factors involved.
oiling.
people try and use the standard ls oil pump, instead of the itr. the ls doesnt have oil squirters so the friction is increased...hence the melted piston problems
Its a piece of engine building fact that the longer the stroke. Thats kind of a cop out of a reason, but it works
even though lsvtec can be made reliable, you have to realize that you are using parts that were never meant to be together and shit does happen. timing belts might skip teeth, cam lift maybe too high....you never really know.
you are right to a point tarty, rs has something to do with it, but there are plenty of other factors involved.
lsvtec
GNU/Linux Evangelist
There is the key, proper lubrication. The LS oil pump is woefully undersized for high RPM. I didn't want the oil squirters becase I ran forged internals and didn't need the heat dissapation that they provide (they don't provide much more lubrication than you get without them).
HatchSpeeD
...Hi...
For future reference, I believe the GSR & R have the same part number for oil pump. No difference. Thats only been maybe the last few years acura made that move.
LateApex31
New Member
It should rev past 8k no problem. However, you should put it on a dyno to see where/if it makes any power.
