4G63 vs SR20DET Redtop
Dec 28, 2005, 06:55 PM
#1
Evolved Member
Thread Starter
iTrader: (30)
Join Date: Jul 2004
Location: SoCali!
Posts: 1,869
Likes: 0
Received 0 Likes
on
0 Posts
4G63 vs SR20DET Redtop
How do these engines compare as far as reliability, max power, etc...?
Note: this is the 4g63 out of the evo, not the previous DSMs
I'm pretty sure the 4g will prevail at the end, but I wanna see Nissan's all popular engine does against the 4g63. Im not talking about the EVO VS Silvia, just the motors meaning not including the drivetrain (4wd vs 2wd).
vs
Note: this is the 4g63 out of the evo, not the previous DSMs
I'm pretty sure the 4g will prevail at the end, but I wanna see Nissan's all popular engine does against the 4g63. Im not talking about the EVO VS Silvia, just the motors meaning not including the drivetrain (4wd vs 2wd).
vs
Dec 28, 2005, 07:06 PM
#3
They're both very good motors. The Nissan block is aluminum which is the biggest difference. The 4g63 has larger ports both on the in and ex sides. The Nissan engine has a timing chain which I like. Upgrade parts for the Nissan are less expensive. I own an Evo and an SR20 powered car and I like them both. I view the 4G63 as an instrument that's tough to break and forgiving over the years, the Nissan a more fragile but still a capable beast.
(IN DEVELOPMENT 4g63)
sr20
Alex
(IN DEVELOPMENT 4g63)
sr20
Alex
Last edited by Bimmubishi; Dec 28, 2005 at 07:09 PM.
Dec 28, 2005, 07:07 PM
#4
Evolved Member
iTrader: (5)
Join Date: Jun 2005
Location: dartmouth
Posts: 530
Likes: 0
Received 0 Likes
on
0 Posts
no it doesnt really matter what year the sr20 is really. The best stock sr20, still can not make as much horsepower for as long as the 4g63. The sr20's injectors are only good for about 230whp, then u need to upgrade. Then the stock turbo is only good for about 250whp, then u need to upgrade. The gt28 of an s15 could make upwards of 265whp, but not much more then that. So you upgrade the turbo but the motor is only good for about 350whp reliably. After this new rods and pistons are in ur future.
An sr20 is a really good motor and if u never plan on going above 300whp u will be alright for a while. The stock injectors are just not good, and even at low boost, they should be replaced. You would think maybe that they would compare better but i dont think they do.
A better comparo I believe would be with a ej20 motor out of WRX's.
An sr20 is a really good motor and if u never plan on going above 300whp u will be alright for a while. The stock injectors are just not good, and even at low boost, they should be replaced. You would think maybe that they would compare better but i dont think they do.
A better comparo I believe would be with a ej20 motor out of WRX's.
Dec 28, 2005, 07:14 PM
#6
The EJ20 is a completely different motor. Given that the two above are similar in layout I think that the comparison is interesting.
Keep in mind also when comparing them solely on power that the stock boost level on an S13 redtop is 7psi.
What kind of power would the Evo make at 7psi?
Keep in mind also when comparing them solely on power that the stock boost level on an S13 redtop is 7psi.
What kind of power would the Evo make at 7psi?
Trending Topics
Dec 28, 2005, 07:20 PM
#8
Evolved Member
iTrader: (9)
Join Date: Mar 2004
Location: So Cal
Posts: 3,856
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by RalliArtEvoVIII
How do these engines compare as far as reliability, max power, etc...?
Dec 28, 2005, 07:22 PM
#9
Evolving Member
iTrader: (4)
Join Date: Feb 2004
Location: Nashville, TN
Posts: 184
Likes: 0
Received 0 Likes
on
0 Posts
Your lucky day, I have both!
The main thing you have to ignore is the turbo chargers on both, in reality they don't mean much since they can be replaced by bolting on another type, if your looking for an advantage in that department the EVO TD05-16G is hands down the winner, the T28 in the later silvia is good only for abot 300 rwhp which is crushed by some of the numbers that stock turbo EVOs put down.
SR20DET has some good strengths, all aluminum block and head for a lighter package. The internals are cast with a 86 x 86 bore 8.5:1 cr, the stock motors have layed down over 500 rwhp on the stock bottom end. The later versions of this motor had VTC on the intake cam. The timing on the cams is via chain, which is good since you should never have to change it, only sucks when you want to tweak cam gears. Stock head gaskets are sketchy, I've seen the stock version, it is designed to blow before you pop anything else, some people have got some high numbers but not very long. The valvetrain is hydrolic so it is self adjusting to maintain a ~0 clearance to the cam lobes This is good for reving to 8000rpm but no more. Individual coil packs for each cylinder. There are no balance shafts
If you don't know anything about the 4G63 I'm not going to sit here and tell you a whole lot about it, Since I've got both a 240SX and a 03 Evo VIII I can only tell you what I know about them from the feel. The SR20DET is a smoother motor, it just doesn't have the rawness that the 4G63 has, eventhough I'm making 450 on my SR it doesn't seem to be as rough as my vishnu stage 0+.
Which is better, well the 4G63 has alot of advantages stock v stock. The only thing the 240 has over it is weight due to the chassis they are found in.
-James
The main thing you have to ignore is the turbo chargers on both, in reality they don't mean much since they can be replaced by bolting on another type, if your looking for an advantage in that department the EVO TD05-16G is hands down the winner, the T28 in the later silvia is good only for abot 300 rwhp which is crushed by some of the numbers that stock turbo EVOs put down.
SR20DET has some good strengths, all aluminum block and head for a lighter package. The internals are cast with a 86 x 86 bore 8.5:1 cr, the stock motors have layed down over 500 rwhp on the stock bottom end. The later versions of this motor had VTC on the intake cam. The timing on the cams is via chain, which is good since you should never have to change it, only sucks when you want to tweak cam gears. Stock head gaskets are sketchy, I've seen the stock version, it is designed to blow before you pop anything else, some people have got some high numbers but not very long. The valvetrain is hydrolic so it is self adjusting to maintain a ~0 clearance to the cam lobes This is good for reving to 8000rpm but no more. Individual coil packs for each cylinder. There are no balance shafts
If you don't know anything about the 4G63 I'm not going to sit here and tell you a whole lot about it, Since I've got both a 240SX and a 03 Evo VIII I can only tell you what I know about them from the feel. The SR20DET is a smoother motor, it just doesn't have the rawness that the 4G63 has, eventhough I'm making 450 on my SR it doesn't seem to be as rough as my vishnu stage 0+.
Which is better, well the 4G63 has alot of advantages stock v stock. The only thing the 240 has over it is weight due to the chassis they are found in.
-James
Dec 28, 2005, 08:32 PM
#11
Evolving Member
iTrader: (4)
Join Date: Feb 2004
Location: Nashville, TN
Posts: 184
Likes: 0
Received 0 Likes
on
0 Posts
I'm running Eagle Rods and Wisco Pistons, so no.
I'm using a Greddy (TD06SH) T67-25G 8.0 cm^2, I'm upgrading to a 10cm^2 for this year I'm going to 272-degree camshafts plus going to AEM EMS (MAF-less) shooting for 500 rwhp on 93 octane.
Full interior with out AC my 240SX only weighs 2697lbs with a 1/2 tank of gas.
-James
I'm using a Greddy (TD06SH) T67-25G 8.0 cm^2, I'm upgrading to a 10cm^2 for this year I'm going to 272-degree camshafts plus going to AEM EMS (MAF-less) shooting for 500 rwhp on 93 octane.
Full interior with out AC my 240SX only weighs 2697lbs with a 1/2 tank of gas.
-James
Dec 28, 2005, 08:50 PM
#13
You need to clarify a little more...if you mean stock vs stock I think a EVO 8 motor will take the cake built the end result is the same IMO.
After you have been around cars for 15 years you'll start to see that in the end engines will make about the same power in the end. Even though people want to believe that certain makes are so much better or so much worse than the other.
Ecotec 2.0 made by? GM has produced over 1000whp!!
4G63's made by? Mitus has produced over 1000whp!!
SR20's, Mix/matched Honda motors, etc over 1000whp!!
In the end it's all the same....just like in the end displacement will win!! 4.6liter Cobra motors over 2000whp!! etc etc etc
Stock 4G63's are hard to beat.
After you have been around cars for 15 years you'll start to see that in the end engines will make about the same power in the end. Even though people want to believe that certain makes are so much better or so much worse than the other.
Ecotec 2.0 made by? GM has produced over 1000whp!!
4G63's made by? Mitus has produced over 1000whp!!
SR20's, Mix/matched Honda motors, etc over 1000whp!!
In the end it's all the same....just like in the end displacement will win!! 4.6liter Cobra motors over 2000whp!! etc etc etc
Stock 4G63's are hard to beat.
Dec 28, 2005, 10:57 PM
#14
sr20 motors dont compare to 4g63. the valvetrain sucks on the sr. i am friends with scott here in tampabay area. he made 567whp on stock internals. that car never made it through a weekend of racing. the valvetrain was always flying apart. compare the design of the two. the sr looks like it was designed in the 60s. one hydralic lifter operates two valves. rockers are shimmed at the valve stem. poor, very poor design.
the sr may be kickass at making power. its just not reliable like the 4g63. the stock 4g63 has seen overrevs to 10k without hurting things. valvetrain failure is extremely rare.
the sr may be kickass at making power. its just not reliable like the 4g63. the stock 4g63 has seen overrevs to 10k without hurting things. valvetrain failure is extremely rare.