Pistons, Rods, and head studs.
Hey everyone! I bought a stage 2 TT kit for my Z a few months ago, and I'm looking into upgrading some of the internals. Does anyone have an idea of the labor time would be for new pistons-rods and head studs? I'm assuming I'd have to replace my fuel pump/injectors along with that, correct?
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Why would you buy a TT setup and not really have a clue of what's needed or what has to be done? If you have to ask, maybe you you need to rethink some things and do so searching. Not trying to be an a$$. Just doesn't add up.
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As to the OP, I would suggest you call GTM or another local shop where you may get your work done. Not many people on this board seem to have that kind of work done yet. |
Hey spohn, why would you waist your time posting something completely useless? You're implying everyone out there that wants to enjoy the fun of a forced induction car should go get a mechanics license first? Stop being a douche and try doing something helpful next time, or don't post.
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So on a side note, it would cost you 5K plus for a shortblock and labor. That's a rough estimate |
Thanks nixlimited, I'll do that. I spoke to GTM about 3 weeks ago, And I was supposed to get a package/estimate, but haven't gotten an answer yet. I wanted to get an opinion from members on here before talking with the shop I usually deal with, because they tend to overcharge.
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I have a fuel pump.. I was asking if I needed to upgrade it. I bought the turn-key kit from GTM. Now please don't clutter the rest of my post with your "constructive criticism", I'd like to get some useful advice.
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He doesn't really need to know anything about turbo set ups if he has the money to do anything needed.
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What fuel pump to you have now? What HP do you plan to run? This answer will determine what type of fuel system you'll need to run.
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Walbro 255lph, shooting for 600whp.
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GTM Motorsports*::*FUEL SYSTEM*::*GTM STAGE 2 FUEL SYSTEM You also could go to this type of fuel pump which is a step up. http://www.forgedperformance.com/sto...e=0&featured=Y |
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Labor time i would assume around 40 hrs. pulling the engine , about 16 hrs to r & r engine plus another 24 (ish) to rebuild engine plus machine shop for balancing. as for fuel pump no and if your keep the boost levels at a reasonable level then no injectors either. Are you replacing rods/pistions for "piece of mind"? or to turn boost levels up? |
Would be to turn up the boost. Not by much, but reaching for 600whp. I'm assuming im right around 530whp at 10-11 psi, so it wouldnt be too big of a jump I don't think, correct me if I'm wrong.
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GTM got 611 WHP out of the fuel pump you currently got installed. If you look in the thread I made about building the block there is some good info in there. I have been waiting for a package price also from sam but no need to rush since this will be done the earliest in winter.
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So in that case, I could potentially keep the same fuel system, and just replace pistons/connecting rods? I was told by another member that head studs were also required, can someone shed some light on this?
Assuming I'm not way off on this, I would think around 15psi would suffice to hit 600whp or darn close, too much for the injectors? |
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No because the fuel system that comes with the stage 2, is maxed out around 580-600. You need larger injectors at the least to hit 15psi. And even if you do hit 15psi, your then maxing out the stage 2 turbos. Best practices would be not to max out any of your components. |
hmmm.. So basically hitting 600whp isnt realistic unless I change my turbos?
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Here is a G37 with stage 2 turbos, 3" down pipes with external WG's and 3" exhaust. Check out the link below. He is making 611whp on 100 oct fuel. My bet would be that you could get 650whp out of the stage 2 turbos, you would really be working the turbos hard at this point though. http://www.the370z.com/forced-induct...p-474rwtq.html http://i313.photobucket.com/albums/l...SI-100-OCT.jpg |
Sorry for all the questions, just a bit confused. Since I shouldn't max out any of the components, and both the turbos and fuel system max out at around 600, they should both be changed before reaching for 600, correct?
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That's great news. Maybe what I'll do then is change the pistons/rods, and set a high boost to aim for 600whp, and a low boost somewhere around 550-560.
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:tup: |
So once the pistons/rods are changed, i can up the boost to 13-14 psi to reach for 600whp on my high boost setting, correct?
Also, would it be a good idea to change my head gaskets while I'm at it? |
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Thanks for the info! I think what I'll end up doing is ordering the stage 1 GTM shortblock and see what my local shop suggests as far as injectors/fuel pump.
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Yeah as of now I have the walbro 255 and denso 600cc injectors. What would you recommend? Keep the walbro 255 and get maybe 800cc Injectors?
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This is becoming a very popular question, I'm putting a list together that will benefit a lot of guys that are twin turbod and looking to take it to the next level.
I will put some info together and post it here . Sam |
Thanks, Sam!!
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Can't wait :yum: |
I think even if it is not 100% necessary to to build the block. The peace of mind it gives you makes it well worth every penny. Sam I think you will have a ton of engine internals orders after you post your thoughts, I will for sure be one of them, thanks.
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