1LikesSirio engines thread
10-19-2009 | 02:28 PM
#2701
Tech Master
Joined: Nov 2003
Posts: 1,811
From: lima-peru
10-28-2009 | 04:12 PM
#2705
BRAND NEW MUST GO AT COST ALL SIRIO S21CL7RSTI 3,5CC STI 7 PORTS RACING PARTS MUST GO
P/S/C SETS REAR BEARINGS CON-RODS ETC ALL MUST GO BRAND NEW AT DEALER COST!
MUST SELL THIS STUFF...
MUST SELL THIS STUFF...
Last edited by Paulie Bee; 11-03-2009 at 05:46 PM. Reason: Sold motor. No longer available.
11-02-2009 | 04:34 PM
#2711
Put your $$ where your mouth is
ONLY NEW PARTS LEFT!
P/S/C SETS REAR BEARINGS CON-RODS ETC ALL MUST GO BRAND NEW
Last edited by Paulie Bee; 11-03-2009 at 05:49 PM.
11-03-2009 | 12:12 AM
#2712
Joined: Aug 2003
Posts: 4,166
From: Henderson, NV
11-24-2009 | 08:11 PM
#2713
Tech Apprentice
iTrader: (2)
Joined: Nov 2009
Posts: 67
From: Queensland, Australia
.12 XXX tuning problems
Hi Guys I need some help.
1st question is: what is a good base tuning setting for the Sirio XXX & XXXV being top, bottom & midrange settings?
2nd thing, I have two XXXV's and cannot get them to idle consistantly, could this be due to worn conrods?? both engines have had around 30 tanks through them, around 2.5 litres of fuel (I would have thought the rods would have lasted a bit longer than this from new) What do you suggest???
3rd thing, when I get the engines to what I believe is a pretty good tune, inclusive of a clean bottom end idle, the motor dies at the end of the main straight (50-60m long) from WOT. Basically what happens is that the motor runs OK for 2 minutes or so and then at the end of the main straight when you throttle off for the bend the engine just dies!
Is this a "too lean on the bottom issue"
Just in case you suggest it, I have made sure the idle is not too low.(in fact I make sure it's a little bit high to compensate for this problem)
I've tried richening up the bottom end but then the engine will not idle well. To be honest I'm stumped! I've been racing for over 10 years so I know a little bit about engines but these Sirios are just too hard to tune and keep going!
Yes, they are cheap but that means nothing when you loose confidence in the tune
Help anyone!!!!
1st question is: what is a good base tuning setting for the Sirio XXX & XXXV being top, bottom & midrange settings?
2nd thing, I have two XXXV's and cannot get them to idle consistantly, could this be due to worn conrods?? both engines have had around 30 tanks through them, around 2.5 litres of fuel (I would have thought the rods would have lasted a bit longer than this from new) What do you suggest???
3rd thing, when I get the engines to what I believe is a pretty good tune, inclusive of a clean bottom end idle, the motor dies at the end of the main straight (50-60m long) from WOT. Basically what happens is that the motor runs OK for 2 minutes or so and then at the end of the main straight when you throttle off for the bend the engine just dies!
Is this a "too lean on the bottom issue"
Just in case you suggest it, I have made sure the idle is not too low.(in fact I make sure it's a little bit high to compensate for this problem)
I've tried richening up the bottom end but then the engine will not idle well. To be honest I'm stumped! I've been racing for over 10 years so I know a little bit about engines but these Sirios are just too hard to tune and keep going!
Yes, they are cheap but that means nothing when you loose confidence in the tune
Help anyone!!!!
Last edited by Yeah Right!; 11-24-2009 at 10:02 PM.
11-26-2009 | 10:39 AM
#2715