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Max HP on stock internals
- Thread starter Dohm
- Start date
It's just an opinion developed from years of reading posts about blown engines but I would pass anything requiring a larger capacity turbocharger. So plan on about 240-250 HP maximum. If you want more than that then spend the money to get a Mountune short block with forged internals. I'll also note that if you do increase the engine power to that 240 HP number you should also have a new "limited slip" differential installed in your transmission. Because that much power will be too much any stock width tires without the Traction Control kicking in. Yeah you might find some way to get 305's to sort of fit but you will end up with a very large turning radius due to tire rub issues. BTW I'm driving on 205/16 Firestone all seasons with a 50K life rating and my mostly stock Fist with it's increased cooling capacity and larger intake cooler is distinctly traction limited in 1st and 2nd gears.
I will also note that boosting power always ends up with a higher cost than anticipated. I have a 1985 Monte Carlo SS with a GMPP 383 under the hood. At present its producing 345 HP which is pretty much the limit that 2nd gear in the tranny can take, a prior built 350 produced over 400 HP and 2nd gear would take near 3 minutes to fully engage the only time I nailed it from the line. Anyhow that 383 can easily be bumped to over 500 HP with a simple cam swap and dusting the valve seal faces by 0.03 inches to provide clearance for the increased lift of the cam. I haven't done that for one simple reason, the transmission to handle that level of power costs roughly 12 thousand and the controller is another 4 thousand.
I will also note that boosting power always ends up with a higher cost than anticipated. I have a 1985 Monte Carlo SS with a GMPP 383 under the hood. At present its producing 345 HP which is pretty much the limit that 2nd gear in the tranny can take, a prior built 350 produced over 400 HP and 2nd gear would take near 3 minutes to fully engage the only time I nailed it from the line. Anyhow that 383 can easily be bumped to over 500 HP with a simple cam swap and dusting the valve seal faces by 0.03 inches to provide clearance for the increased lift of the cam. I haven't done that for one simple reason, the transmission to handle that level of power costs roughly 12 thousand and the controller is another 4 thousand.
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Here's an article I think you will find helpful on that point. They go through the engine part by part and talk about how much power they think each one can handle, and which ones might need to be changed to reach their goal. Here's a description of their goal-
Here’s a look at the FORD EcoBoost 1.6L in detail... It’s our goal to build this 1.6L engine to thrive and survive at 400 whp.
https://dsportmag.com/the-tech/ford-ecoboost-1-6l-analysis-turbocharged-direct-injection-ccvtc/
Anecdotally, people here on the Forum describe going up to about 300 horsepower on stock internals without too much effect on reliability. That tracks with what the article says, which is that you can generally increase power by about 50% reliably.
Here’s a look at the FORD EcoBoost 1.6L in detail... It’s our goal to build this 1.6L engine to thrive and survive at 400 whp.
https://dsportmag.com/the-tech/ford-ecoboost-1-6l-analysis-turbocharged-direct-injection-ccvtc/
Anecdotally, people here on the Forum describe going up to about 300 horsepower on stock internals without too much effect on reliability. That tracks with what the article says, which is that you can generally increase power by about 50% reliably.
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OP
Thread Starter
#6
Thread Starter
#6
Thank you for the info. I definitely think an LSD is on my top priority even just for stock because man is open diff annoying 😅 I would love to go absolutely crazy and push numbers nobody has heard on a Fist but I know it will take a longgg time and even more money🥲
If you want stupid powerful and fast off the line you'll have to toss the ST powertrain and adapt the body/frame to mount a Focus RS powertrain. You will also want to start with a Mountune 2.3 long block assembly and spend a good bit of time finding a turbo large enough for 600+ HP output. To do this you'll also need roughly 70,000 dollars of cash. for the work involved. Current local rumors in the supercar community is that there are two of these cruising in the Detroit area and one appears to be bone stock from the side profile. From the rear the tipoff is that the rear has been tubbed to carry 275 profile tires. Word is the sleeper likes to pick on Dodge Hellcats.
You should mention what the car is being used for. A track car, Drag car, highway car will all see different levels of abuse on different parts of the car.
My best advice from someone who enjoys driving more than building, Prepare the rest of the car for big power and enjoy the car in stock power. Then when the rest of you chassis is ready, throw in the built engine. If you want to push as much power as possible and do the engine first, you are just going to run into roadblock after roadblock.
My best advice from someone who enjoys driving more than building, Prepare the rest of the car for big power and enjoy the car in stock power. Then when the rest of you chassis is ready, throw in the built engine. If you want to push as much power as possible and do the engine first, you are just going to run into roadblock after roadblock.
As someone who works in the court system (California). This is not entirely accurate.
A smog check or just under the hood inspection is legal. It is considered a lawful order from an officer because it is a vehicle equipment inspection. Vehicle equipment inspections do not require a search warrant of any sort. The same way an officer can pull you over, because he thinks your tint is too dark and he wants to check, is the same way that applies to smog or equipment under the hood. If you deny an officer a request you are technically committing a Felony in the state of CA. Will you get one? Probably not, because the paperwork for a Felony vs a smog is A LOT. However, I have seen cases where officers have given a Felony if they are petty enough. I have also seen misdemeanor tickets given in these situations as well.
My best advice, Don't drive like a dummy, always keep Waze open even on regular commutes, and if you do get stopped you should just comply. You are HEAVILY rolling the dice if you do not and the odds are not in you favor.
I say this to you as someone who has owned a straight piped integra, s2000, mustang and R6. I have been pulled over probably 40+ times in my life and only ever received 6 tickets and most were just front plate tickets. I never deny the officer a chance to pop the hood and all of my cars have had obvious illegal modifications.
also please keep in mind laws very from state to state.
A smog check or just under the hood inspection is legal. It is considered a lawful order from an officer because it is a vehicle equipment inspection. Vehicle equipment inspections do not require a search warrant of any sort. The same way an officer can pull you over, because he thinks your tint is too dark and he wants to check, is the same way that applies to smog or equipment under the hood. If you deny an officer a request you are technically committing a Felony in the state of CA. Will you get one? Probably not, because the paperwork for a Felony vs a smog is A LOT. However, I have seen cases where officers have given a Felony if they are petty enough. I have also seen misdemeanor tickets given in these situations as well.
My best advice, Don't drive like a dummy, always keep Waze open even on regular commutes, and if you do get stopped you should just comply. You are HEAVILY rolling the dice if you do not and the odds are not in you favor.
I say this to you as someone who has owned a straight piped integra, s2000, mustang and R6. I have been pulled over probably 40+ times in my life and only ever received 6 tickets and most were just front plate tickets. I never deny the officer a chance to pop the hood and all of my cars have had obvious illegal modifications.
also please keep in mind laws very from state to state.
This also applies to DUI related stops. You "can" say no to a breathalyzer check. However your license gets suspended and you go straight into custody even if you are sober, simply because you denied. (you consent to this when you sign for your license in CA). Also getting a search warrant approved for a blood draw takes less than 5-10 minutes.
So while you technically can say no to a lot of these things. I can tell you it does not work well for the majority of people and there is always a catch.
So while you technically can say no to a lot of these things. I can tell you it does not work well for the majority of people and there is always a catch.
Actually, there was a CHP officer pulling cars to the side of the road, which you have to obey, BUT, the unconstitutional 'smog check' personnel were from a private company which you have no reason to allow them to check your car. They were NOT law enforcement, so you are within your rights not to allow them to check your vehicle. The CHP officer knew this and did nothing knowing that he had no jurisdiction over the 'stop'. You have NOT committed any crime, so the 'stop' is unconstitutional. Don't forget you're covered by the 4th Amendment from illegal searches which is what this was.
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