New Mod installed - No gain
Thread Starter
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
New Mod installed - No gain
I installed the Accel TPI intake on my car last week.
So now I have a stock TB, ported plenum, stock runners and the Accel base.
Yesterday at Etown I tested the new mod. No gain at all. :sad:
My 4 full passes gave me ET's of 12.96 - 13.03 with a mph of 103.5.
2 other passes I was on the brakes , so they don't count.
All comments welcome.
Vic
So now I have a stock TB, ported plenum, stock runners and the Accel base.
Yesterday at Etown I tested the new mod. No gain at all. :sad:
My 4 full passes gave me ET's of 12.96 - 13.03 with a mph of 103.5.
2 other passes I was on the brakes , so they don't count.
All comments welcome.
Vic
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Vic,
What were the weather conditions on race day? I remember we were racing in -440 conditions and better back last fall. Perhaps conditions weren't as good yesterday, yet you STILL rand in the 12s? Just looking for something here. :)
What were the weather conditions on race day? I remember we were racing in -440 conditions and better back last fall. Perhaps conditions weren't as good yesterday, yet you STILL rand in the 12s? Just looking for something here. :)
Team Owner
Joined: Aug 2000
Posts: 42,934
Likes: 18
From: Sydney, Australia
CI 6-7-8-9-10 Veteran
St. Jude Donor '07-'08-'09-'10-'11-'12-'13-'14-'15-'16-‘17, '22
Re: New Mod installed - No gain (Vic'89)
That corresponds with my butt dyno...
I have the same top end setup except I have a 52mm throttle body and I removed the internal casting "bumps" from the stock runners - definitely not worth the time (modding the stock runners - that is). I couldn't feel a difference but some have said here that the (approx.) 15hp you are supposed to gain won't be felt... :confused:
It is plain to see that the ACCEL base is a superior component to the OEM base, problem is that the OEM runners choke the ACCEL base. Can't wait for my SR box to arrive so I can fit it, not sure if I will get much (if any) of a gain with my current setup but I will find out soon anyway... :crazy:
I have the same top end setup except I have a 52mm throttle body and I removed the internal casting "bumps" from the stock runners - definitely not worth the time (modding the stock runners - that is). I couldn't feel a difference but some have said here that the (approx.) 15hp you are supposed to gain won't be felt... :confused:
It is plain to see that the ACCEL base is a superior component to the OEM base, problem is that the OEM runners choke the ACCEL base. Can't wait for my SR box to arrive so I can fit it, not sure if I will get much (if any) of a gain with my current setup but I will find out soon anyway... :crazy:
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Race Director
Joined: Mar 1999
Posts: 12,594
Likes: 237
From: Bartlett Illinois
Re: (RichS)
I didn't think you would see a gain unless you replaced the runners as well. They are still a big bottle neck in the system.
Le Mans Master
Joined: Mar 2001
Posts: 9,464
Likes: 1
From: Modesto CA
Re: (-=Jeff=-)
Your vette is still the fastest bolt-on vette Vic! :cool: But seriously, on my 85, I ported the FREAK out of the stock intake, and I actually LOST time! :eek: I went from a 14.0 to a 14.3! So it's hard to say what's going on.
Thread Starter
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: New Mod installed - No gain (vader86)
you installed the Accel base and got NOTHING?
The weather conditions were similiar to all my previous days that I ran 12.9x ET's. My 60' times were the same as other days also.
Now, if it was 80 degs and I ran 12.9x, I would conclude that the Accel base helped.
My gut feeling tells me that adding a set of runners will not help. 65Z01 also has data that proves this.
I know the Accel base is a very good base. But on my stock cam, stock heads, stock exhaust manifold Vette, it didn't help.
I enjoy testing items one at a time. I spend all of last year installing the mods in my signature.
Vic
[Modified by Vic'89, 11:07 AM 4/8/2002]
Thread Starter
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: (scorp508)
Scorp
My car has never seen a dyno. But no way I have 350 hp.
I think the heads can support more power, but the Cam might be maxed out.
Another thought I have is that maybe I need to up my shift points.
Vic
My car has never seen a dyno. But no way I have 350 hp.
I think the heads can support more power, but the Cam might be maxed out.
Another thought I have is that maybe I need to up my shift points.
Vic
Melting Slicks
Joined: Apr 2002
Posts: 2,308
Likes: 1
From: Portsmouth VA
Re: New Mod installed - No gain (Vic'89)
the rest of the intake is acting as a restriction, especially the stock runners and throttle body. you just gotta remember that when you change stuff, the effects are cumulative... even though the accel base might only make a 15hp difference now, after you change some of the other intake components it will provide a bigger gain compared to the stock base. lots of components by themselves don't do all that much, but when combined with other mods they have good results!
Le Mans Master
Joined: Apr 2000
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From: DrunkDefender
CI 1-2-3-4-5-6-7-8 Veteran
CI-IV AutoX Champ
CI-IV Burnout Champ
St. Jude Donor '07-'10
Re: New Mod installed - No gain (SonnyinVA)
I dunno guys. I dynoed mine before and after this mod and gained 15ish peak rwhp.
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
My car has never seen a dyno. But no way I have 350 hp.
I think the heads can support more power, but the Cam might be maxed out.
Another thought I have is that maybe I need to up my shift points.
I think the heads can support more power, but the Cam might be maxed out.
Another thought I have is that maybe I need to up my shift points.
How about some 1.6 rockers and new springs? Perhaps you're losing a little power up top from old springs. You haven't done those yet have you? Are you willing to pop the valve covers yet?
Thread Starter
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: New Mod installed - No gain (red90sixspeed)
I dunno guys. I dynoed mine before and after this mod and gained 15ish peak rwhp.
Do you have the dyno graph's ? That would really help me.
Scorp
The valve covers have never been off yet. Maybe they need to come off. ;)
Vic