MyLevel wrote:I just purchased the 07 3.7 mdx intake manifold... the inlet of the manifold is pretty identical if not the same diameter as my stock j35? I would like to see the measurments and differences in theses manifolds (tl-sh, zdx, mdx) Ive seen the throttle body difference. So what makes what IM better than the other.
IDK if it is because i have the 07 IM off the mdx and was one of the first 3.7... or are all the IM have the same diameter inlet as the J35
-Im sure @ccord10 could chime in.
@ccord10 wrote:MyLevel wrote:I just purchased the 07 3.7 mdx intake manifold... the inlet of the manifold is pretty identical if not the same diameter as my stock j35? I would like to see the measurments and differences in theses manifolds (tl-sh, zdx, mdx) Ive seen the throttle body difference. So what makes what IM better than the other.
IDK if it is because i have the 07 IM off the mdx and was one of the first 3.7... or are all the IM have the same diameter inlet as the J35
-Im sure @ccord10 could chime in.
The '07MDX throttle body port should be larger than the stock J35 because it needs more air, i'm not sure of the exact inside diameter of the 3.5l TB(68-70mm?) but the TL_SH TB is 80mm. the outlets to the intake runners are all the same size 3.5l vs 3.7l. The major differences between 3.5l &3.7l are the TB port size, intake chamber size, and the crossover port sizing. the larger chamber size helps improve torque and the larger crossovers help power in the upper rpm's. there is not much difference between 3.7l manifolds. The only major differences i can see between the 3.7l manifolds are the crossover size and shape, the TB port length (and possibly the TB port size?). All 3.7l manifolds are made of magnesium vs 3.5l aluminum manifolds. The TSX manifold is identical to the ZDX/MDX but it costs more because its imported from Japan .
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