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Thread: SR16VE Pistons And SR16VE N1 Pistons

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Posts: 1-10 of 119
2008-10-15 11:27:48
#1
SR16VE Pistons And SR16VE N1 Pistons
By my calculations

SR16VE pistons should make 13.5 to 1 compression in a 2L motor

SR16VE N1 pistons should make 13 to 1 compression in a 2L motor


So with a little work to these N1 pistons we should be able to get them down to a managable 12.5 to 1 compression.

Maybe a .5mm shave off the top and .5 mm deeper valve notches.

I guess we could run them the way they are and just add 2 gallon of c16 to 8 gallons of 93 octane and you end up with 97.6 octane perfect for 13 to 1 compression.

To get the gas to mix right put in the C16 first then use the presure from the pump to mix the gas as you put in the 8 gallons.
2008-10-15 12:53:53
#2
dang, thats a cheap alternative to buying aftermarket pistons, this is use with the 20ve head correct
2008-10-15 12:56:59
#3
Originally Posted by ashtonsser
dang, thats a cheap alternative to buying aftermarket pistons, this is use with the 20ve head correct


Whats the diffrence between the heads below as far as combustion chaber goes, nothing. So...

SR20VE head
S16VE head
SR20VE 20V head
2008-10-15 14:03:12
#4
You can can use either one with 93 octane plain and simple
Just have to tune to avoid detonation...
But its been done....
2008-10-15 14:10:47
#5
Originally Posted by Payu
You can can use either one with 93 octane plain and simple
Just have to tune to avoid detonation...
But its been done....


Yes it has been done before but what where the HP gains. If you run them on about 97 octane or so your safe.

13.5 to 1 and 13 to 1 is not safe on 93 octane pump gas.

If you richen up the mixture and take out alot of timing to stop it from pinging in my opinion you have not gained anything form going that high in compression to start off with.

12.5 to 1 is the max that should be run on 93 octane and if done should be done with a forged piston for reliability.

Again that is my opinion. Thats just like saying running a 14 to 1 compression piston is safe on 93 octane, just tune it right and you will be fine.
2008-10-15 14:26:45
#6
Its been proven that the VE head provides more detonation resistance than a DE I have seen them handle as much as 30 deg of total advance with SR16 cams so I think they will yield sufficient amount of power with 93 premium unleaded jejeje....
2008-10-15 14:36:40
#7
Originally Posted by Payu
Its been proven that the VE head provides more detonation resistance than a DE I have seen them handle as much as 30 deg of total advance with SR16 cams so I think they will yield sufficient amount of power with 93 premium unleaded jejeje....


I agree that a VE head has more detonation resistance than a DE. You are not saying anything new.

I am saying if you put SR16VE pistons in a VE they will detonate with 93 octane and thats a fact. So if you pull timing out you have gained nothing for the worth of putting them in.

The diffrence in WHP from 13.5 to 1 to 12 to 1 on a 2L is about 6 WHP.

13.5 to 1 compression is to high for pump gas and anyone will tell you that.

That being said produce a 13.5 to 1 VE motor dyno higher than 210 WHP with N1 cams on pump gas without an unported head on 93 octane.

I can produce 4 dyno sheets of 10.3 and 11 to 1 dynos on unported heads from 210 WHP to 218 WHP and this from diffrent cars across the USA.
2008-10-15 14:39:45
#8
These people are

Andreas Miko 216 WHP 11 to 1
Cory 212 WHP 10.3 to 1
Teal97 213 WHP 10.3 to 1
John from Cali 218 WHP 11 to 1
2008-10-15 15:05:10
#9
I really dont care about Dyno numbers and the only that have my respect with the provided numbers at the track is Cory and his car its not in full trim but its the Quickest at the time. I am not a VE owner at the time and I am not interested in getting another one so It doesn't make sense keep arguing about these....
I really want to see you making 250whp on your build so keep wrenching so you get it done and tuned....
2008-10-15 15:07:52
#10
Have you seen Kesi's dyno sheet of his last N/A build???
That its something impressive....
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