Ready for the rollers...
Thread Starter
Racer
Joined: Jul 2007
Posts: 313
Likes: 0
From: Laurel MS
Ready for the rollers...
Just made some "minor" mods on my 94. Will be using a Mustang Dyno which I understand are notoriously conservative. Take a look @ my HP projections for a reality check. Agree or disagree??
1. Vortex forced air...5 HP
2. 53MM TB............. ??
3. Shorty headers....... -0-
4. Borla Cats............ 15 HP
5. 1.6RR's(planned).... 15
Net gain..somewhere around 35 RWHP maybe.
Cheers
Check your 6
1. Vortex forced air...5 HP
2. 53MM TB............. ??
3. Shorty headers....... -0-
4. Borla Cats............ 15 HP
5. 1.6RR's(planned).... 15
Net gain..somewhere around 35 RWHP maybe.
Cheers
Check your 6
Last edited by jim_hewett; May 17, 2008 at 09:38 AM.
Burning Brakes
Joined: May 2006
Posts: 904
Likes: 0
From: Boynton Beach FL
1. Vortex forced air... 0 hp on a dyno. no air is being forced anywhere, you're not moving.
2. 53MM TB............. 0 hp. You don't need more intake until you do something else to the car that requires it.
3. Shorty headers....... maybe a few HP here.
4. Borla Cats............ maybe a few HP here, but not as much as completely gutting/removing them, which would give you 5-10 hp, I think?
Take it the drag strip, at least then the forced air might give you some 'seat of the pants' HP.
$0.02
2. 53MM TB............. 0 hp. You don't need more intake until you do something else to the car that requires it.
3. Shorty headers....... maybe a few HP here.
4. Borla Cats............ maybe a few HP here, but not as much as completely gutting/removing them, which would give you 5-10 hp, I think?
Take it the drag strip, at least then the forced air might give you some 'seat of the pants' HP.
$0.02
Melting Slicks
Joined: Jan 2005
Posts: 2,604
Likes: 0
From: Phoenix, Arizona
I seriously doubt that you'll see anywhere close to a 30rwhp increase w/ the mods you listed...but I'm curious to see what #'s these things do add up to. Do you have dyno #'s before the mods to make a comparison?
Le Mans Master
Joined: Nov 2006
Posts: 5,032
Likes: 204
From: Greenwood Indiana
2021 C4 of the Year - Modified Finalist
C4 of Year Finalist (appearance mods) 2019
I dynoed my 94 last year, (all stock). 270hp/ 301tq.
STOCK:In the 1/4mi, my best was 13.75 @ 101mph.
Additions made 2 weeks ago include: Ram-Air intake, 1.6rr, LT4 springs, Hooker shorty headers.
No dyno yet, (because I'm not finished modding)
, but I do have new 1/4mi times that show a good improvement over stock.
After bolt-ons: 13.231 @106.39mph.
STOCK:In the 1/4mi, my best was 13.75 @ 101mph.
Additions made 2 weeks ago include: Ram-Air intake, 1.6rr, LT4 springs, Hooker shorty headers.
No dyno yet, (because I'm not finished modding)
, but I do have new 1/4mi times that show a good improvement over stock. After bolt-ons: 13.231 @106.39mph.
Le Mans Master
Joined: Oct 2004
Posts: 7,706
Likes: 485
From: Everett WA
C4 of Year Finalist (appearance mods) 2019
And I will venture to guess that the roller rockers gave you the greatest portion of your improvement. I can't see the ram air doing anything unless your original air filter was really dirty.
Thread Starter
Racer
Joined: Jul 2007
Posts: 313
Likes: 0
From: Laurel MS
I dynoed my 94 last year, (all stock). 270hp/ 301tq.
STOCK:In the 1/4mi, my best was 13.75 @ 101mph.
Additions made 2 weeks ago include: Ram-Air intake, 1.6rr, LT4 springs, Hooker shorty headers.
No dyno yet, (because I'm not finished modding), but I do have new 1/4mi times that show a good improvement over stock.
After bolt-ons: 13.231 @106.39mph.
STOCK:In the 1/4mi, my best was 13.75 @ 101mph.
Additions made 2 weeks ago include: Ram-Air intake, 1.6rr, LT4 springs, Hooker shorty headers.
No dyno yet, (because I'm not finished modding)
, but I do have new 1/4mi times that show a good improvement over stock. After bolt-ons: 13.231 @106.39mph.
Thanks
Jim
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Melting Slicks
Joined: Apr 2007
Posts: 2,547
Likes: 46
From: NJ
Melting Slicks
Joined: Apr 2007
Posts: 2,547
Likes: 46
From: NJ
I dynoed my 94 last year, (all stock). 270hp/ 301tq.
STOCK:In the 1/4mi, my best was 13.75 @ 101mph.
Additions made 2 weeks ago include: Ram-Air intake, 1.6rr, LT4 springs, Hooker shorty headers.
No dyno yet, (because I'm not finished modding), but I do have new 1/4mi times that show a good improvement over stock.
After bolt-ons: 13.231 @106.39mph.
STOCK:In the 1/4mi, my best was 13.75 @ 101mph.
Additions made 2 weeks ago include: Ram-Air intake, 1.6rr, LT4 springs, Hooker shorty headers.
No dyno yet, (because I'm not finished modding)
, but I do have new 1/4mi times that show a good improvement over stock. After bolt-ons: 13.231 @106.39mph.
Le Mans Master
Joined: Nov 2006
Posts: 5,032
Likes: 204
From: Greenwood Indiana
2021 C4 of the Year - Modified Finalist
C4 of Year Finalist (appearance mods) 2019
Burning Brakes
Joined: Sep 2003
Posts: 1,214
Likes: 0
From: Miami FL
There are two different part numbes for the composite valve covers. The early style and the later style. the early style will not clear the 1.6 rockers (mine didn't) the later style do clear. The look the same on the exterior. (I ordered lateer style)
Tech Contributor
Joined: Aug 2006
Posts: 9,933
Likes: 103
From: Peoria Arizona.. Resident Gold Cylon
Burning Brakes
Joined: Apr 2006
Posts: 765
Likes: 0
From: Houston Texas
What kind of dyno did you run it on to give 270hp?
I had my '94 A4 on a Mustang dyno and it only made 226hp @5300 rpm. I was not pleased.
This included the MSD ProBillet distributor, shorty headers, stock exhaust, 160* thermo., HyperTech tune, air foil, etc, etc. All the bolt-ons.
I have added a 75 sq.in. cold ram-air ( retaining the stock filter also, lid not cut), LT4 hot cam kit, GM perf. roller lifters, heads port matched to intake and exhaust w/ paths cleaned up considerably and surfaced, valve job, and all the above mods. Still need to upload my new pcm4less tune...runs very well even on the HyperTech tune, but does not idle high enough so I have to keep the TB revved up a little at stop lights to keep the cam lope controlled.
I'd like to run it on a different dyno the next time and hope for better numbers.
I had my '94 A4 on a Mustang dyno and it only made 226hp @5300 rpm. I was not pleased.
This included the MSD ProBillet distributor, shorty headers, stock exhaust, 160* thermo., HyperTech tune, air foil, etc, etc. All the bolt-ons.
I have added a 75 sq.in. cold ram-air ( retaining the stock filter also, lid not cut), LT4 hot cam kit, GM perf. roller lifters, heads port matched to intake and exhaust w/ paths cleaned up considerably and surfaced, valve job, and all the above mods. Still need to upload my new pcm4less tune...runs very well even on the HyperTech tune, but does not idle high enough so I have to keep the TB revved up a little at stop lights to keep the cam lope controlled.
I'd like to run it on a different dyno the next time and hope for better numbers.
Thread Starter
Racer
Joined: Jul 2007
Posts: 313
Likes: 0
From: Laurel MS
At speed(on the road) think I'll have a better shot @ 30rwhp WAG. If not 1.6 RR's will get me there.
Last edited by jim_hewett; May 16, 2008 at 07:13 AM.
Melting Slicks
Joined: Apr 2007
Posts: 2,547
Likes: 46
From: NJ
I have a full roller... In the original vid you can see each rocker move but it was messed up when I uploaded it to photobucket...
Thread Starter
Racer
Joined: Jul 2007
Posts: 313
Likes: 0
From: Laurel MS
Not buying that.....know what a kick in the pants feels like..have very measurable gains. The "sucking & looking good" not part of my goal. The fat lady hasn't sung yet snickers!
Last edited by jim_hewett; May 15, 2008 at 02:46 PM.
Thread Starter
Racer
Joined: Jul 2007
Posts: 313
Likes: 0
From: Laurel MS
Thanks a million.
Jim