I too would like to know if people have dyno charts of before and after
thier mods to the throttle body.
Its not that common to dyno before and after because it costs money. Its at
least $50 for a baseline pull which is 2 runs and they dont give you the
oppertunity to work on your rig there. Most places are $75 for a baseline.
When you do that twice for a before and after comparrison, thats $100. plus
the money for the mod.
I think bruce will agree that bigger isnt always better. There are people on
the list who modified the throttle body Without an all out hone job to 52mm
and cut 1/4 mile thier times. I think if you stay away from boring it, and
do what frank and bruce do, than youll be getting more ponies.
Basically, I did an experiment. Magnum performance charges like 500+ for a
friggen throttle body PLUS you have to give them your stock one. That is
allot!. Lets say you could (this is an example) get 20hp, add $500 for the
new tb and $250 for your stock one. That comes out to $37. per hp.
What I chose to do was buy a new tb from the dealer and take it to a machine
shop and do it local. This way, I get my old tb to fall back on if it doesnt
pass emissions or if I dont like it I can put the old one back on.
After telling the machine shop what to bore it to 52mm etc, he didnt think
it would increase hp. Then I told him I had a Kenne bell supercharger on
order and he then said that would make a difference and that is why I had it
done. I have yet to test to see if the 52mm tb makes a difference on a
forced induction engine.
Joel
----- Original Message -----
From: Ollie Garcia <motoplex@midsouthmotoplex.com>
To: <dakota-truck@buffnet.net>
Sent: Friday, June 11, 1999 3:00 PM
Subject: DML: Re: Re: Throttle Body Mods - Again
> This is the second time I have seen this particular post. Both times I
was
> just about ready to do the mod when Joel puts out this warning.
> Is Joel the only one who has had this sort of performance loss? Or has no
> one else dyno'd their truck before/after the tb mod?
>
>
> --Ollie
>
>
>
>
> -----Original Message-----
> From: dakota_5sp_v8 <dakota_5sp_v8@zracer.com>
> To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
> Date: Wednesday, June 09, 1999 11:32 PM
> Subject: DML: Re: Throttle Body Mods - Again
>
>
> >
> >
> >try not to spend too much money on the TB mod and be careful on what you
> do.
> >I dumped money into it and LOST ~10 hp. But, I would have bet my paycheck
> on
> >the fact that it gave more power. It did have better throttle response
but
> I
> >did a before and after dyno and found the results alarming. They guy
> running
> >the dyno mentioned a fellow with a viper did the same thing and lost hp.
> >
> >Here is what I did/had done
> >bought new TB from dealer
> >had it honed out to 52MM
> >Polished
> >custom butterflies
> >flatten butterfly mounts
> >
> >Joel
> >----- Original Message -----
> >From: Chuck and/or Loreen <clrobbins@home.com>
> >To: DML <dakota-truck@buffnet.net>
> >Sent: Wednesday, June 09, 1999 12:40 PM
> >Subject: DML: Throttle Body Mods - Again
> >
> >
> >> Greetings
> >>
> >> I have been trying to sift through the archives to try and see if
> there
> >> was ever a comparison done
> >> to see if a ported V-6 TB had a comparable CFM to a stock V-8 TB. So,
far
> >I
> >> have not had any luck.
> >> I have a '99 V-6 which I want to change/modify the TB on, but I'm
not
> >> sure which way to go. Should
> >> I port my 6er or should I install a V-8 TB and port the intake manifold
?
> >> Also, what about installing a
> >> ported V-8 TB. Would that be too much air for my 6er ?
> >> Sorry to bring up an old topic, but I just want to be sure before I
> do
> >> it.
> >>
> >> Thanks,
> >>
> >> Chuck in Cranston, RI
> >> '99 Intense Blue Dak Sport, RC 3.9L 5 spd
> >> Sport Plus Group, Factory molded running boards
> >> 10" Edelbrock Elite air cleaner, 10 x 2.75 K&N air filter
> >> Homemade ram air, 180 Stant stat,
> >> V-Tech marker masks & taillight covers
> >> DML digest mode
> >>
> >
> >
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:14:23 EDT