How can you get 300hp?
01-07-2019, 04:46 PM
#16
Rennlist Member
Thread Starter
I thank everyone for their tips. I am looking for modifications in natural aspirated form only and will look into some of the tips provide here. I now feel confident that I will reach the goals I set up for this project.
Thanks
Peder
Thanks
Peder
01-07-2019, 07:35 PM
#18
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It will also blow his motor, like many did.
01-07-2019, 07:55 PM
#19
Rennlist Member
Originally Posted by MN
There are now 60 D1R supercharged 968 out there. Apparently none has "blown" yet, but might be only a question of time till some head gaskets will give way.
As far as it being a matter of time, in stock form these engines can last a long time without blowing their head gaskets.
01-07-2019, 11:18 PM
#20
Drifting
Let’s get back on topic since I’m aspiring for more N/A hp as well. However, I’ve given up on peak HP - I want the car to be even more of a hoot to drive on track days. Useable and reliable power is what I want.
Has anyone had their stock 968 throttle body bored out? Any measureable results?
I’m going to do a good head refresh, valve job and some port work, along with RS headers, exhaust (supplier yet to be determined) and the bored throttle body. Maybe mild cams as well. And then a Behe tune.
If I’m short of my goals - oh well. At least I tried and those new Miata RF look nice 👍
Has anyone had their stock 968 throttle body bored out? Any measureable results?
I’m going to do a good head refresh, valve job and some port work, along with RS headers, exhaust (supplier yet to be determined) and the bored throttle body. Maybe mild cams as well. And then a Behe tune.
If I’m short of my goals - oh well. At least I tried and those new Miata RF look nice 👍
01-22-2019, 01:10 PM
#25
01-25-2019, 03:56 PM
#27
Rennlist Member
Thread Starter
01-25-2019, 11:53 PM
#28
Race Car
01-26-2019, 06:19 PM
#29
Addict
Rennlist Member
Rennlist Member
A Porsche 987 3,4L made a bit under 300HP in 2007, it'll be a challenge to make that with less displacement and fewer cylinders. An offset crank grind and overbore, cams, head porting, intake, header and modern engine management should manage it particularly if you can tune for E85. The engine build will cost about what a used 987 3.4 costs in the USA.
01-26-2019, 09:33 PM
#30
Rennlist Member
" intake, header and modern engine management" should get you +15-25 HP. Add less restrictive exhaust, higher flow fuel injectors. That is the cheap part.
The rest of the way is the expensive part! " offset crank grind and overbore, cams, head porting" $$$$$$.
If you are going to do it, start with the easy stuff. OEM the 3 liter 968 seems to be pretty efficient, if only it had 1000 more rpm.
-Yogii
AKA 968 Virgin
The rest of the way is the expensive part! " offset crank grind and overbore, cams, head porting" $$$$$$.
If you are going to do it, start with the easy stuff. OEM the 3 liter 968 seems to be pretty efficient, if only it had 1000 more rpm.
-Yogii
AKA 968 Virgin