I am starting to work on my new engine project. I noticed most of the people on this board making big power all have FI setups. I was thinking about doing a big power engine but having it all motor. What do you guys think?? I was looking for atleast 500+hp. Or would it just be better to go FI? Any suggestions/input at all are appreciated!

For those of you who have had or currently have a high hp all motor engine how do you like it?

BTW: Anybody that has a short block they don't need let me know!!


Thanks,
Chris

 

take a look around the site it has been discused before that your the amount of money that you are gonna drop into an all motor setup most go fi and get bigger numbers

 

man, it's tough just to get to 300+whp n/a. iuno how you're going to do 500+whp n/a unless you've got some DEEP pockets!

 

It was more just an idea. I mean I love the sound of a turbo spooling. so it was just a thought. I didn't really have a problem with the money I just wanted to do something different.

 

^^^ He never got anywhere near 350rwhp.

 

He made 291hp w/ 15:1 Compression Ratio w/ a minor tune. In the end it looks like he gave up and went to FI.

One thing that he did not do is increase the stroke of his engine to make even more toqure, he just had the crankshaft lightened. I will be installing a stroker kit on my engine. And then yes I know I will need all new clearances and etc.. Maybe it would be better after it is all said and done to through TT's on it but I am not sure.

 

With such a lofty goal you're definitely better off and cheaper going the FI route, which has matured quite nicely over the past years.

Having said that, assuming you could even manage 100hp/liter NA (another lofty goal for a non-works development), you're new project engine would need to displace no less than 5.0 liter, a size that is most non-ideal for a 6 cylinder layout and probably impossible as a rework from the existing 3.5 block.

 

Actually I would be aiming for about 4.3 liters. With a compression ratio of 11:1. If you look at AEBS stroker kit they have claimed to make some pretty impressive number from NA setup. Yes claimed is not full proof but I would be willing to give it a shot.

Check out this thread:
https://g35driver.com/forums/showthr...hlight=stroker

And why spend so much money on something that is gonna give me minimal power gains compared to FI. Its because I want to do something different. I want to give something else a try instead of following in everyones foot steps. I have had it extremely rough over the past 6 years and I found that taking your own path is much more exciting and fun IMPO. Not to say there is nothing wrong with going FI (which I might eventually do) but for right now I just wanna try something different and experiment.

 

Yes, FI is very played out these days, therefore I understand and commend you should you choose to persuit the unorthodox NA route. Although I question your sanity with the 500hp goal.

I'm well aware of the existing 4.3L and 3.6L stroker kits out there. At 4.3L you'll need to generate in excess of 116hp/L to achieve 500hp, a feat you'll find virtually impossible even by oem standard for that given setup. 11:1 CR won't help you much, you're going to need a whole lot more than that. Throw a little laughing gas in the mix, then perhaps it might be possible.

 

116hp/L is possible, if he spins it at something like 15k rpms .

But that's in a world with FTL travel as well.

 

OK maybe 500hp is a little much. But I still wanna go the NA route.

 

Kudos to you then. I have the utmost respect for the NA route. Not to take anything away from the FI folks of course.

 

That would be a sight to see.