Before installing of the itb i got 240whp on edelbrock im and 68mm tb.
Set up is
85x95 dart block
m24xcam
after itb i got 228whp after tuning,what could go wrong?Its the 52mm and 2000 pro series.

 

did you synch the throttle plates?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">did you synch the throttle plates?</TD></TR></TABLE>
And are you getting full throttle?

 

????

I gained 12hp on the top on a stock motor by just bolting on TWM's with a good tune Not too mention a ton of midrange

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">And are you getting full throttle?</TD></TR></TABLE>

Good thing to look for

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GearSpeedEF7 &raquo;</TD></TR><TR><TD CLASS="quote">????

I gained 12hp on the top on a stock motor by just bolting on TWM's with a good tune Not too mention a ton of midrange </TD></TR></TABLE>

As im sure youre aware, the more developed the engine combo , the harder those extra horses are to wring out, stock engine would show a bigger gain than an already modded engine, etc.

 

just out of curiousity, what rods (rod length) did you use with the 95mm crank?

 

Yes, but what about the torque.....HP be damned, we need the real information

 

You will need a carb balancer to syncronise the throttle plates.Sounded like a boxer engine the other time, so probably need to make some adjustments. 52mm is rated for 348bhp, feels kind of big? Or maybe you need bigger cams like M25E or supercams to match? But I think the c/r needs to be 15.... hmmm

 

If you are using a PR3 head, those results do not surprise me at all.

We've seen power loss with TWM's 50mm's on PR3 heads versus Ported ITR IM's and JG VictorX manifolds on 2.0L's.

Runner to throat transition on TWM's is just retarded on PR3 heads, and when you add enough cr and movement of air from a large crank like that, you are definately going to hurt rather than help.

Remember, out of the box, TWM's will only make power on mild cr 1.8L engines, more on P72 heads than PR3 heads as well. If you want to make power with TWM's on a different setup, you must buy various combinations of stacks and tune stack length/size. Otherwise, you will make more power with a good IM 9 times out of 10.

If I were you, I'd switch back to the JG, because you aren't going to make more power on your setup with TWM's.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">If you are using a PR3 head, those results do not surprise me at all.

We've seen power loss with TWM's 50mm's on PR3 heads versus Ported ITR IM's and JG VictorX manifolds on 2.0L's.

Runner to throat transition on TWM's is just retarded on PR3 heads, and when you add enough cr and movement of air from a large crank like that, you are definately going to hurt rather than help.

Remember, out of the box, TWM's will only make power on mild cr 1.8L engines, more on P72 heads than PR3 heads as well. If you want to make power with TWM's on a different setup, you must buy various combinations of stacks and tune stack length/size. Otherwise, you will make more power with a good IM 9 times out of 10.

If I were you, I'd switch back to the JG, because you aren't going to make more power on your setup with TWM's.</TD></TR></TABLE>

you're saying exactly what I wanted to say, but I kinda want to know the rod length that he used, with that piece of info, I'd be able to know his piston speed, but usually as I've seen big crank motor with high pistons' speeds don't really like the TWM

 

not to mention the fact that TWM developed the itb's using a p72 head and for a gsr they are set up good, but for a pr3, the angle on the throttle bodies are all wrong


Modified by boots at 1:03 PM 1/21/2007

 

Not all TWM's are created equal. I have had to move the mounting holes up .090 and over .020 to get some to match a PR3 head before starting to port them.

 

My rod length are 5.9",i'm using m24x,previously i tried it on toda c and gain like 7whp.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by saintspall &raquo;</TD></TR><TR><TD CLASS="quote">My rod length are 5.9",i'm using m24x,previously i tried it on toda c and gain like 7whp.</TD></TR></TABLE>

Over what? B16 IM? ITR IM?

Moral of the story, you will get more power (everywhere) using a good IM versus TWM's.

 

Over the victor x

 

Hmm the super cam seems interesting but i don think my compression can support,maybe the next time when i rebuild my engine again.How ya doin?Any new project?Been trying out the m24x and really not easy to get it right.