PDA

View Full Version : Trumpets


16xe_chris
17-02-09, 08:25 PM
What size of trumpets have you got on your carbs??

Or ram pipes as some people like to call themlol


Is it the longer they are the more low down torque they have:confused:
meritlover
18-02-09, 10:31 AM
you are tuning for a specific point in the load/rev range. the pressure waves have different effects depending on mods/choke sizes/cams etc...

you really have to tune it on a dyno to find the right length. you will loose some here but find some there, do not expect a remarkable gain all over
Stuart
18-02-09, 10:45 AM
imho its going to be such subtle tiny differences that its not worth the ball ache of buying a load and trying them.
meritlover
18-02-09, 10:47 AM
yes, that is my point. i would doubt you would feel it on the road anyway.
Stuart
18-02-09, 10:57 AM
placebo mods are the tits though
meritlover
18-02-09, 11:30 AM
like silicone HT leads.
16xe_chris
19-02-09, 08:26 PM
you are tuning for a specific point in the load/rev range. the pressure waves have different effects depending on mods/choke sizes/cams etc...

you really have to tune it on a dyno to find the right length. you will loose some here but find some there, do not expect a remarkable gain all over


So if i put different trumpets on it will just move the power around the rev ranges??

I will be aiming to achieve the best acceleration thats possible, so am i guesing longer rather than tiny? or does it really make that little difference?

Cheers for the info :thumb: guys
philip
20-02-09, 12:22 PM
90mm trumpets. sorted;)
GDN16v
20-02-09, 12:26 PM
Also depends on how much room you have between the trumpet end and the bulkhead what size trumpets will fit!
16xe_chris
20-02-09, 06:24 PM
Also depends on how much room you have between the trumpet end and the bulkhead what size trumpets will fit!

You can make anything fit if you try hard enough:thumb:
16xe_chris
20-02-09, 06:25 PM
90mm trumpets. sorted;)

Why do you say 90mm:confused: have you tried other sizes?
Adam
20-02-09, 06:37 PM
90mil because they look :cool:
Ash
20-02-09, 06:44 PM
bring on the trumpets! (sorry)

what engine/spec is this for?
Mike
20-02-09, 06:49 PM
http://farm4.static.flickr.com/3230/2956418356_d3eceaee3d.jpg

http://profile.ak.facebook.com/object3/895/56/l31193507005_2368.jpg

Trumpet.
16xe_chris
20-02-09, 06:58 PM
bring on the trumpets! (sorry)

what engine/spec is this for?

I think its a mildly tuned:confused: minister race engine built for a race westfield series

1600 16v corsa lump, going to be running on dcoe carbs

I'm just looking for acceleration:thumb:
16xe_chris
20-02-09, 06:58 PM
90mil because they look :cool:

lol lol I'll tell them that at the rolling road lol lol
Adam
20-02-09, 07:04 PM
And they'll agree lol lol

The overall opinion is longer trumpets aid torque,shorter ones peak power.

(not sure if thats already been said in the thread or not)
philip
21-02-09, 07:52 AM
there was a thread on mig i think, and one lad mentioned that saw slightly better gains across the mid range i think, using the 90's over 120's!