SH28 engine
11-10-2005, 09:42 AM
#26
My Feedback: (2)
Join Date: Feb 2005
Location: Jacksonville, FL
Posts: 3,094
Likes: 0
Received 0 Likes
on
0 Posts
RE: SH28 engine
ORIGINAL: Dave33
...Just remember you can't go back down once you start using a higher fuel.
...Just remember you can't go back down once you start using a higher fuel.
On the exhaust, I found the HPI Ribbed pipe to make the SH come alive. Some people were using the polished pipe, so I gave that a try, but the ribbed pipe made more power...both low and high rpm...by far.
On temps, I would see 265 in proper tune (Body on) at the end of a tank of 30% Trinity MHP- Power blend; running nearly wide open all of the time in a very wide open field.
11-10-2005, 01:46 PM
#28
My Feedback: (2)
Join Date: Feb 2005
Location: Jacksonville, FL
Posts: 3,094
Likes: 0
Received 0 Likes
on
0 Posts
RE: SH28 engine
According to tower: http://www2.towerhobbies.com/cgi-bin...?&I=LXKYU8&P=7
The spec 2 is 6+1. The basic Z.28 is 3+1
The spec 2 is 6+1. The basic Z.28 is 3+1
11-10-2005, 03:38 PM
#30
My Feedback: (2)
Join Date: Feb 2005
Location: Jacksonville, FL
Posts: 3,094
Likes: 0
Received 0 Likes
on
0 Posts
RE: SH28 engine
A higher number of ports typically means more power up top and higher peak RPM. Lower # of ports = more torque.
Is it good? It depends on what you want. Do you want torque down low for wheelies or power on top for higher top speed at the end of a straightaway? Not to say that 3 port or 11 port won't have good top end or wheelie (Respectively). Highly modified engines/race engines will mostly have higher port counts
Most Hefty & affordable big blocks are 3+1 port for high torque. Sirio makes an 11 port race engine. In modern Nitro engines, I have not seen more than 11 ports...or fewer than 3+1.
Is it good? It depends on what you want. Do you want torque down low for wheelies or power on top for higher top speed at the end of a straightaway? Not to say that 3 port or 11 port won't have good top end or wheelie (Respectively). Highly modified engines/race engines will mostly have higher port counts
Most Hefty & affordable big blocks are 3+1 port for high torque. Sirio makes an 11 port race engine. In modern Nitro engines, I have not seen more than 11 ports...or fewer than 3+1.
