Hey Over the next year I am going to be completly rebuilding a SR so that I can have a project to fill my time. I have already decided how to build the head but now I am at a lose. I am going to be using
Tomei Solid Lifters
Tomei 270/270 Solid Cams
Brian Crower Valve Springs
Brian Crower Ti Retainers
In the head and im wondering if anyone has any experience building the bottem end? I dont have any experience in this so any help that you have would be good. Im looking for some information on good parts to use what have worked with other people. If anyone has any suggestions that would be greatly appreciated. HP Goals are 375-400. I just dont wanna slap a fat turbo on it I wanna completly redo the entire motor.
Thanks in advance. If anyone could post some awsome setups you have seen work well that would be great.
While its apart get it balanced…at least the pistons and rods. Blancing the crank isnt nearly as important because the spinning mass in centralized.
One of my buddy’s tore apart a CA1.8 turbo and the stock pistons had a variation of as much as 15g!!!
Put in rocker arm stoppers as well. And management.
Dont expect 375-400hp daily driver power. You will need a big ass turbo so spool up will take forever.
350 hp seems like a kind of dumb power goal if your going to go through the work and money to rebuild the top and bottom ends…You could just do 300 on the stock engine. But anyway, for 400hp just rebuild the top end like you were going to and I would just leave the bottom end stock. Unless you have money to through around…
I’am doing the same thing gettin the block rebuilt and everything to take 350hp, just cause stock block can take it does’nt mean you should’nt rebuild it and add parts to it, because now it can take the beating 100% and nothing will fu*k up. I personally would rather spend a good amount of money and have a guarantee engine that will take a nice beating instead of being cheap and taking chances.
What guarantee do you have that your built engine isnt going to blow up? None. Just because you install some fancy pistons and rods doesnt mean its not going to blow up. I’ve seen more people go through built motors then guys running stock blocks. Why? Because of assembly. Motors from the factory are built with the proper tolerances and assembly. Very few shops can reproduce that.
Then there’s the whole tuning aspect…shitty tuner and kaboom.
There’s little to argue about the SR’s bottom end. Its incredibly strong and can take a serious beating at 300whp-350whp.
As stated above, rebuilding the block for anything under 400whp is a waste of money / time / effort. Even if at 400whp the block blows up after 20,000k for $1500 or less (much less in some cases) gets you a new long block… alot less time and money then rebuilding a block.
Incase you still have the urge to flush money down the toilet please provide pictures!
Now on the OTHER hand, if you are rebuilding it with a different bore / stroke in mind and getting it all balanced for sweet high RPM #'s then power to you and please provide some dyno #'s and videos of the completed project!
Also… 400HP is very easily accomplished with out major turbo lag and is a BLAST on the street. Just ask ol’ Dano.
I’am planning on boreing/stroking my redtop to I think its 2.3L from what i can recall. I shall put up dyno videos and etc when I’am done of course. I’am getting my car dynoed very soon at Sashas just to see what its at with the full 3" catback,cat,downpipe and boost controller tuned for 10psi.Anyone have a clue what my hp should be at?
What would you guys reccomend than when it comes to increasing torque I heard the Jun stroker kit (expensive sh*t) will increase my torque. I’am basically looking for 350hp and more torque than I have right now cause this low end torque nonsense is killing me!!