whats the diff between these b-series heads....
01-03-2007 | 09:29 PM
#1
Thread Starter
Member
Joined: Nov 2005
Posts: 37
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whats the diff between these b-series heads....
so i was at a meet today and guys were talking about how great the ls-vtec frankenstien motor was. and i was wondering what was so great about this gsr head (other then the vtec part 
)
i was wondering, what if i put a gsr head on my si motor (b16a2)
would it make a difference?
how would it make a difference?
everyones help is much appreicated
thank you
david
) i was wondering, what if i put a gsr head on my si motor (b16a2)
would it make a difference?
how would it make a difference?
everyones help is much appreicated
thank you
david
01-04-2007 | 08:38 AM
#3
EG6
Joined: Jan 2005
Posts: 1,159
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No point. B16 heads are better IMO. Hence why they are the same cast as the Type-R.
I am not going to give a long explanation of why I think they are better, because everyone has their opinions. And I know someone will have something to say.
I am not going to give a long explanation of why I think they are better, because everyone has their opinions. And I know someone will have something to say.
01-04-2007 | 09:51 AM
#4
On permanent hiatus
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From: A forum with actual tech
Here is something to digest: https://www.honda-acura.net/forums/s...d.php?t=232593
Last edited by Däs Schmoo; 01-04-2007 at 09:54 AM.
01-04-2007 | 09:53 AM
#5
Joined: Jul 2003
Posts: 28,282
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From: michigan
GSR head and a PR3 head with the same amount of work into them will flow not the exact same, but similarly enough for it not to matter. Stock for Stock the GSR head flows better than the PR3 b16a casting, and has better cams. Stock for Stock the PR3 ITR head outflows the GSR head marginally, and again has a better stock cam.
01-05-2007 | 08:14 AM
#6
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Joined: Jun 2005
Posts: 672
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From: Allentown PA, - Phila, PA
Case in point, I have this setup, and have had it for like 3 years now...
Reason I changed from B16 to GSR was cause timing belt broke 3 days before we were gonna change it, and I just slapped on GSR head that my bro had bought for a project, so I didn't have to wait for the head to be checked for bent valves...
With the GSR head on the B16 block with stock P30 pistons, the Compression ratio is increased, almost 0.5 points... This alone will add more torque and power... Not to mention the better cams in the GSR head...
Plus the IAB system on the GSR gave me NOTICEABLE torque gains on the low end of the powerband... However, compared to my Skunk2 IM on the B16 head, the GSR motor made slightly less power near redline...
But in general, the car was easily faster than a comparable B16 powered civic... Hell, we swapped in a B16A2 swap (JDM 10.4 C/R motor) into my buddies CX hatch, stripped from the junk yard, and I was still faster... Even though I have GSR tranny in a DX coupe...
So, IMO and from experience, the so-called difference in flow between the heads is negligible cause the increase in C/R will easily offset this... And this increased C/R will only help...
01-05-2007 | 08:21 AM
#7
Joined: Jul 2003
Posts: 28,282
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From: michigan
Actually, the difference is not negligible...
Case in point, I have this setup, and have had it for like 3 years now...
Reason I changed from B16 to GSR was cause timing belt broke 3 days before we were gonna change it, and I just slapped on GSR head that my bro had bought for a project, so I didn't have to wait for the head to be checked for bent valves...
With the GSR head on the B16 block with stock P30 pistons, the Compression ratio is increased, almost 0.5 points... This alone will add more torque and power... Not to mention the better cams in the GSR head...
Plus the IAB system on the GSR gave me NOTICEABLE torque gains on the low end of the powerband... However, compared to my Skunk2 IM on the B16 head, the GSR motor made slightly less power near redline...
But in general, the car was easily faster than a comparable B16 powered civic... Hell, we swapped in a B16A2 swap (JDM 10.4 C/R motor) into my buddies CX hatch, stripped from the junk yard, and I was still faster... Even though I have GSR tranny in a DX coupe...
So, IMO and from experience, the so-called difference in flow between the heads is negligible cause the increase in C/R will easily offset this... And this increased C/R will only help...
Case in point, I have this setup, and have had it for like 3 years now...
Reason I changed from B16 to GSR was cause timing belt broke 3 days before we were gonna change it, and I just slapped on GSR head that my bro had bought for a project, so I didn't have to wait for the head to be checked for bent valves...
With the GSR head on the B16 block with stock P30 pistons, the Compression ratio is increased, almost 0.5 points... This alone will add more torque and power... Not to mention the better cams in the GSR head...
Plus the IAB system on the GSR gave me NOTICEABLE torque gains on the low end of the powerband... However, compared to my Skunk2 IM on the B16 head, the GSR motor made slightly less power near redline...
But in general, the car was easily faster than a comparable B16 powered civic... Hell, we swapped in a B16A2 swap (JDM 10.4 C/R motor) into my buddies CX hatch, stripped from the junk yard, and I was still faster... Even though I have GSR tranny in a DX coupe...
So, IMO and from experience, the so-called difference in flow between the heads is negligible cause the increase in C/R will easily offset this... And this increased C/R will only help...
show me a dyno graph. whoopie it bumped up compression, it wouldnt be .5 more along the lines of .2-.3. Sounds like your butt dyno wanted you to feel some amazing difference. Also what ecu were you running with the new GSR head? still the p30 or did you change over to the p72?
