View Poll Results: SBE or Forged
SBE
8
57.14%
Forged
6
42.86%
Voters: 14. You may not vote on this poll
New motor time. What should I do?
he doesnt "need" but he probably should, especially if he cant let off the go pedal fast enough when its over boosting.
BTW, OP, do something to keep if from over boosting, I added fuel to mine past a certain extent. If you rely on the boost controller only to protect you, you are making a mistake. if the wastegate fails and pins open, your boost controller wont do anything. I made mine real rich where I can tell something is off if it goes past my threshold.
BTW, OP, do something to keep if from over boosting, I added fuel to mine past a certain extent. If you rely on the boost controller only to protect you, you are making a mistake. if the wastegate fails and pins open, your boost controller wont do anything. I made mine real rich where I can tell something is off if it goes past my threshold.
how do you pull timing at that boost level with the stock computer. Would be cool to have some sort of timing box that could do it. Hmmmm. I might have given myself an idea.
Couple ways to go about it. Once you scale your time you won't see the same g/cyl so you'll know what columns to pull timing/fuel. Otherwise higher boost equals higher IATs so you can log what you think is normal IAT and yank a bunch of timing above that. The first method is more common.
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 77
Likes: 0
to be clear I know there are a lot of people on here that know more than me. Which is why I asked. Also, it’s hard not to sound like an ******* on the internet. Didn’t intend to.
On The Tree
Joined: Aug 2010
Posts: 178
Likes: 8
I know the 4.8 can take a lot of abuse if well tuned and supported and that’s the way the op is going just don’t agree that a forged engine is not stronger it also take away the restrictions of the game I just don’t like to be restricted, I also like to build it rite the first time and be done with unnecessary tear downs a strong engine is very reassuring.
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 77
Likes: 0
1) How in TF did you not notice instantly that it was over boosting and let off? Mine went to 15-16lbs from a normal 10 and I KNEW something was off so I immediately let off.
2) My suggestion is if you have the coin, do forged piston and rods with a stock crank, in a 5.3. Thats my plan anyways for mine.
2) My suggestion is if you have the coin, do forged piston and rods with a stock crank, in a 5.3. Thats my plan anyways for mine.
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 77
Likes: 0
Pretty sure what melted the Pistons was you went crazy lean? Kinda what it sounds like.
Personally? I would get a JY short block just to get it running. I hate a non-running car. Fix your boost controller or jump to a 3-bar setup so you can get fuel when overboosted.
If you still want a forged motor later, feel free. But then you do a planned swap in a weekend. Car downtime trumps all other concerns to me.
Personally? I would get a JY short block just to get it running. I hate a non-running car. Fix your boost controller or jump to a 3-bar setup so you can get fuel when overboosted.
If you still want a forged motor later, feel free. But then you do a planned swap in a weekend. Car downtime trumps all other concerns to me.
this was my fault I bought a used boost leash and when I thought I saved my settings it didn’t and stayed on the previous owners settings which resulted in 30lbs on my turbo.
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 77
Likes: 0
it was going to the tuner that weekend. Just screwed up and didn’t save my settings in the controller when I thought I did.
Last edited by 2ndGenLSX; Oct 21, 2019 at 08:43 PM.
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TECH Addict
Joined: Sep 2010
Posts: 2,898
Likes: 467
wasn’t arguing just to argue. I’m genuinely open to others opinions or I wouldn’t have asked. However, it seemed he wasn’t aware of the capability/reliability that can be had, within reason, with an sbe. Not that there’s anything wrong with that. It’s just hard to take an opinion of someone who seems to be a little ill-informed on the subject.
to be clear I know there are a lot of people on here that know more than me. Which is why I asked. Also, it’s hard not to sound like an ******* on the internet. Didn’t intend to.
to be clear I know there are a lot of people on here that know more than me. Which is why I asked. Also, it’s hard not to sound like an ******* on the internet. Didn’t intend to.
It's risky and reckless.
Basic common sense should prevail here.
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 77
Likes: 0
To add some more context here, I got the quote from the machine shop today. Forged rods and pistons and machine work will end up around $2200 they said. Obviously this would be capable of more power more reliably but I will still be limited power wise by my turbo and fuel system. im guessing 700-800 hp range. There are plenty of SBE’s living at that power level. Will it live forever? No Will it be more fragile? Yes
But at that power level would you guys spend $600 and save money or upgrade elsewhere, or go ahead and spend $2200 on something I can grow into later.
But at that power level would you guys spend $600 and save money or upgrade elsewhere, or go ahead and spend $2200 on something I can grow into later.
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 77
Likes: 0
To add some more context here, I got the quote from the machine shop today. Forged rods and pistons and machine work will end up around $2200 they said. Obviously this would be capable of more power more reliably but I will still be limited power wise by my turbo and fuel system. im guessing 700-800 hp range. There are plenty of SBE’s living at that power level. Will it live forever? No Will it be more fragile? Yes
But at that power level would you guys spend $600 and save money or upgrade elsewhere, or go ahead and spend $2200 on something I can grow into later.
But at that power level would you guys spend $600 and save money or upgrade elsewhere, or go ahead and spend $2200 on something I can grow into later.
Spend $600 and save money or upgrade elsewhere. In the 700-800 range on a Gen 4 you're not doing anything out of the ordinary and with proper boost controller settings and fail-safes in the tune like mentioned previously there is no reason that SBE won't live. It's just ignorant to say otherwise as its been proven time and again.
I'm at 750 ish wheel on a gen 3.5 5.3 and ita been seeing 20# for like almost a year and has never skipped a beat . I did have 1 set of heads lift from installing shitty head gaskets and using warped heads . Lol not the shortblocks fault tho.
he doesnt "need" but he probably should, especially if he cant let off the go pedal fast enough when its over boosting.
BTW, OP, do something to keep if from over boosting, I added fuel to mine past a certain extent. If you rely on the boost controller only to protect you, you are making a mistake. if the wastegate fails and pins open, your boost controller wont do anything. I made mine real rich where I can tell something is off if it goes past my threshold.
BTW, OP, do something to keep if from over boosting, I added fuel to mine past a certain extent. If you rely on the boost controller only to protect you, you are making a mistake. if the wastegate fails and pins open, your boost controller wont do anything. I made mine real rich where I can tell something is off if it goes past my threshold.
Spend $600 and save money or upgrade elsewhere. In the 700-800 range on a Gen 4 you're not doing anything out of the ordinary and with proper boost controller settings and fail-safes in the tune like mentioned previously there is no reason that SBE won't live. It's just ignorant to say otherwise as its been proven time and again.
Seen it happen many times, A properly built(forged) and tuned engine and will "usually" last longer and handle more power plus be a little more forgiving but there is no guarantee. All you have to do I look at all the dyno fail videos floating around. A friend of mine raced sprint cars and his new engine blew up on the dyno before it was even being pushed, One rod failed and took out pretty much everything but one head and a few rods and pistons and the intake. I look at it this way, It's not a case of "Can you afford to build it" It's a case of "Can you afford to rebuild/replace it" If you hurt it.