Seing double?, Now tested double D-jet performance! Options

[larss]

Anybody tried double D-jet air boxes and TB before?

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.lsmteknik.se-10787-1389339349.1.jpg)


/Lars S

[AE354803]

Anybody tried double D-jet air boxes and TB before?

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.lsmteknik.se-10787-1389339349.1.jpg)


/Lars S

I'm not sure but I think you may want to cut the cyl 1/2 runners so they are the same length as your 3/4 runners, you could then use the cutoff section of the runner to connect the 1/2 TB manifold to the 3/4 TB manifold?

This should make your setup and flow to each cylinder bank more even. The way it is right now I would expect cylinders 3/4 to have higher flow than 1/2 (even if the 3/4 TB is closed and 1/2 TB wide open CYL 3/4 would still have the 3/4 TB manifold acting like an air reservoir while 1/2 would have to pull their air all the way through full length runners from the 1/2 TB manifold.)

I don't have fuel injection on my Type IV but from an even flow perspective that should make things easier, neat project though

[larss]

Anybody tried double D-jet air boxes and TB before?

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.lsmteknik.se-10787-1389339349.1.jpg)


/Lars S

I'm not sure but I think you may want to cut the cyl 1/2 runners so they are the same length as your 3/4 runners, you could then use the cutoff section of the runner to connect the 1/2 TB manifold to the 3/4 TB manifold?

This should make your setup and flow to each cylinder bank more even. The way it is right now I would expect cylinders 3/4 to have higher flow than 1/2 (even if the 3/4 TB is closed and 1/2 TB wide open CYL 3/4 would still have the 3/4 TB manifold acting like an air reservoir while 1/2 would have to pull their air all the way through full length runners from the 1/2 TB manifold.)

I don't have fuel injection on my Type IV but from an even flow perspective that should make things easier, neat project though

Yes the arrangement is not balanced (yet). It was wery handy to use the original brackets for the left plenum so that one is in its original position. However it would not be to complicated to make the installation almost symmetrical.


/Lars S