Bottom end enough to get 300 hp?

[RenleyX]

With just a bottom end full build + head build and no turbo - how much power can i get out of my 1998 RS engine block?

200? 300?

 

[jbeaton9292]

I wouldnt push the 420a its same motor that came in a neon

 

[ervin00]

You will be spending a lot of money to reach 200 but you should be asking this on 2gnt.com

 

[RenleyX]

I will check out 2gnt.com

And if you guys think it makes any difference - I am looking at a engine bottom end for sale that has fully forged internals, all new.

Same goes for rebuilt head.

I just want to know that if i buy these two things, that the car will be able to put out some good HP without having to add a turbo setup...

Would that work?

 

[imaracer83]

I will check out 2gnt.com

And if you guys think it makes any difference - I am looking at a engine bottom end for sale that has fully forged internals, all new.

Same goes for rebuilt head.

I just want to know that if i buy these two things, that the car will be able to put out some good HP without having to add a turbo setup...

Would that work?

Honestly, and this comes from experience because I just did a 420a build and it can become a nightmare. But since you have forged internals, naturally you can reach 300HP without a problem provided whoever built the bottom end knows what they're doing. Now in my case, I have a 99 Eclipse GS that I converted and it's a beast without reaching 300HP. I'm safely pushing about 260 to the wheels and have forged internals and bored to .020. So it's possible for sure, just be careful though, these motors weren't really built to handle high abuse like the 4g63 was and I also have FMU, AEM wideband, SAFC II, and on and on. I'm pushing about 12lbs of boost at the moment and it's a rocket. So again, be careful, have fun but do your homework before you spend the time and money bolting "he said, she said" to your car, ESPECIALLY anything to do with the powerplant. These other guys on this site are incredibly knowledgeable and know way more than I do so hopefully they can give you better insight, they're great people, listen to them and good luck.

 

[EGLTAWLN]

if you want horsepower, it is very expensive to stay n/a.

 

[RenleyX]

Honestly, and this comes from experience because I just did a 420a build and it can become a nightmare. But since you have forged internals, naturally you can reach 300HP without a problem provided whoever built the bottom end knows what they're doing. Now in my case, I have a 99 Eclipse GS that I converted and it's a beast without reaching 300HP. I'm safely pushing about 260 to the wheels and have forged internals and bored to .020. So it's possible for sure, just be careful though, these motors weren't really built to handle high abuse like the 4g63 was and I also have FMU, AEM wideband, SAFC II, and on and on. I'm pushing about 12lbs of boost at the moment and it's a rocket. So again, be careful, have fun but do your homework before you spend the time and money bolting "he said, she said" to your car, ESPECIALLY anything to do with the powerplant. These other guys on this site are incredibly knowledgeable and know way more than I do so hopefully they can give you better insight, they're great people, listen to them and good luck.

Great advice !

That is 100% what I needed to know and it is very helpful

I need to keep doing research on this and the parts involved

thanks guys !

 

[bryanwheat]

It doesn't matter that you have forged internals, they do not make power, only support power. What you would have to do to make n/a power is to increase compression, port the head, cams, good quality header, aftermarket intake, tuning and you are probably looking at 180 horsepower at that absolute max.

 

[yamaripper415]

If you have forged internals your best bet is to turbo it .. But even then it will still be pricy after parts and tuning.

 

[boost97gst]

There was a guy on here, bullett? maybe thats his username. But in either case, I remember seeing individual TBs, like a motorcycle. Now i know he had a LOT of work in that thing and did not hit 300.
You want a lot of NA power? Displacement, high compression, cams..... I would suggest----brace yourself: A HONDA!
Bash away, but Honda builds great engines that make a lot more power right outta the box than any 420a.
You really want to look into a MSNS, forged internals and going forced induction(turbo) to get some balls on that chrysler motor. You will be very happy and the cost of building a turbo motor vs wringing every last drop out of an NA engine is not even comparable. Way cheaper to go turbo.

Thats my 2 pennys

 

[RenleyX]

Thanks guys! I think i will instead look into adding a turbo to the RS.

new stuff to learn/research !....

 

[Keenan]

You either need lots of nitrous or a good size turbo to make that kind of power but more than likely the bottom end will fail before getting there. Good luck