The heat riser tubes may need to be bent slightly to line up with the heat riser ports on the exhaust.
The New VW Dual Port Intake Manifold will fit all Dual Port 1600cc and larger engines using stock heads and includes heat risers.
The carburetor base flange will accept both stock VW dual port (34PICT) and single port (30 or 31PICT) carburetors. We recommend
installing new manifold boots with any new intake manifold. The boots are available in the additional options tab. The heat riser
tubes are not attached to the manifold. They insert into tubes underneath the manifold at either side and attach to the heat riser
ports on the exhaust. The tubes may need to be bent slightly to line up with the exhaust.
Due to manufacturing variances and the supplier wanting to either fit all possible stroker engine combinations, or
simply not checking the reproduction manifold versus a stock manifold, the tubes on the intake manifolds and the heat riser will
have to be trimmed to length before installation. Regardless, there are currently no other new alternatives for a new stock
replacement intake manifold.
32mm (1 1/4") off the 3-4 (left) side intake tube
48mm (1 7/8") off the 3-4 (left) side heat riser tube
We whole heartedly wish this wasn't the case but until the supplier runs through their incorrect stock or demands a better product, this
is what is available to the industry. We are working as hard as possible to find another solution but for now trimming is required. We use
a pipe cutter (the intake tube is 1 3/8" diameter) for the cleanest cut, but you can use a sawzall, hack saw, cut off wheel, etc.
Whereever you source your intake manifold, make sure you check the fitment! The cross tube from end casting to end casting
should be measure roughly 16.75" to 17.75" across. The variation being that the intake manifold can and should slightly enter into each
Once the heat risers are installed, high temp RTV can be used to seal the tubes to the intake manifold base.
The heat risers and tube ports are not interconnected to the carburetor ports. The tubes are isolated from each other.
California Prop 65 Warning:
Please Note:The information listed below is for stock, unmodified VW's manufactured for sale in the US. VW's are commonly modified and very often parts from another year VW may have been installed on your car. California Pacific JBugs is not responsible for any errors if your car has been modified in any way.