well since the Thread about the Dyno=not happy got lost in the great SN crash of 05 here is a new starter.
***back story***
went to the dyno and pulled like 161hp out of a DSS pro bullit shorblock, Thumper ported gt40 heads, Tmoss ported exploder gt40 intake, TFS1 cam. Ran rich @ 11.9 and got the A/F to go were I wanted it to with the tweecer to 13.1 or .2. Only gained 1hp from leaning it out. Mind you I pulled 230ish rwhp with box stock gt40 heads, TFS1 cam, Tmoss ported stock lower and only 7cyl. as I had a 30% drop in #4 or 3.
I shimmed the valvetrain as both the heads and block are milled, and I am not floating the valves anymore, when I shimmed the rockers the lifters were makeing all kinds of noises from being compressed too much. I need to re-do the measureing when I put on the 1.7rr but I need to get the valve stem caps to cleat the cobra rockers and I will prob. need to re-measure at that point.
I found a little gain in power, but did not pick up the gain as to the power I am down on. I started to look at plugs and stuff at this point to investigate further. I found the plugs in 6 & 7 were looking realy odd compared to the others, I thought they may be fouled as the #6 plug boot was burnt threw from the headers. I replaced the plug wires with FMS 9mm ones, and two new plugs for 6 & 7. Drove around and it felt alittle better than before.
******info from lost thread/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
****new info******
Last Fri. at Gatway Int. Raceway (for you WFC fans I live about 20min. away from there) as our local mustang site was running a 5.0 v 4.6 shootout. Made 1st pass at 14.5 @ 98mph, 2nd pass was 15.00 @ 95mph, and finaly a 16.9 @ 60mph I had very, very loud backfires at 4,000rpms. I parked the car and called it an evening.
Drive home and Sat. morn. I pull the plugs on 6 & 7, the plugs look like I just pulled them out of the box, mind you again this is after about 35-40min. round trip and 3 1/4 passes. I mean no signs of wear or fuel at all, the metal looks clean and the white parts look as white as can be. I hook my ind. timing light to the plug wires on 6 & 7 last night and there is spark going threw the wires and getting to the plugs, I then pulled off plug wire 6 and then 7 and then both with no change in idle tone, quality, rpms at all. I am preaty sure I have
a) a bad inj. on 6 & 7
b) some kind of clog in the fuel rail by 6 & 7
c) some kind of elec. line conn. issue or break in the harness
Anyway, taking into account that I went 14.5 @ 98mph with a friggan 6cyl V8 realy has me wanting to get things sorted out to see what this combo will do.
sorry for the long post.
***back story***
went to the dyno and pulled like 161hp out of a DSS pro bullit shorblock, Thumper ported gt40 heads, Tmoss ported exploder gt40 intake, TFS1 cam. Ran rich @ 11.9 and got the A/F to go were I wanted it to with the tweecer to 13.1 or .2. Only gained 1hp from leaning it out. Mind you I pulled 230ish rwhp with box stock gt40 heads, TFS1 cam, Tmoss ported stock lower and only 7cyl. as I had a 30% drop in #4 or 3.
I shimmed the valvetrain as both the heads and block are milled, and I am not floating the valves anymore, when I shimmed the rockers the lifters were makeing all kinds of noises from being compressed too much. I need to re-do the measureing when I put on the 1.7rr but I need to get the valve stem caps to cleat the cobra rockers and I will prob. need to re-measure at that point.
I found a little gain in power, but did not pick up the gain as to the power I am down on. I started to look at plugs and stuff at this point to investigate further. I found the plugs in 6 & 7 were looking realy odd compared to the others, I thought they may be fouled as the #6 plug boot was burnt threw from the headers. I replaced the plug wires with FMS 9mm ones, and two new plugs for 6 & 7. Drove around and it felt alittle better than before.
******info from lost thread/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
****new info******
Last Fri. at Gatway Int. Raceway (for you WFC fans I live about 20min. away from there) as our local mustang site was running a 5.0 v 4.6 shootout. Made 1st pass at 14.5 @ 98mph, 2nd pass was 15.00 @ 95mph, and finaly a 16.9 @ 60mph I had very, very loud backfires at 4,000rpms. I parked the car and called it an evening.
Drive home and Sat. morn. I pull the plugs on 6 & 7, the plugs look like I just pulled them out of the box, mind you again this is after about 35-40min. round trip and 3 1/4 passes. I mean no signs of wear or fuel at all, the metal looks clean and the white parts look as white as can be. I hook my ind. timing light to the plug wires on 6 & 7 last night and there is spark going threw the wires and getting to the plugs, I then pulled off plug wire 6 and then 7 and then both with no change in idle tone, quality, rpms at all. I am preaty sure I have
a) a bad inj. on 6 & 7
b) some kind of clog in the fuel rail by 6 & 7
c) some kind of elec. line conn. issue or break in the harness
Anyway, taking into account that I went 14.5 @ 98mph with a friggan 6cyl V8 realy has me wanting to get things sorted out to see what this combo will do.
sorry for the long post.