Why did they change the intake manifold on a 1999 Jeep Wrangler?
The manifold from a 1999 – 2004 is designed to increase horsepower as due to new emission requirements the 1999 -2004 engines lacked the horsepower of the earlier model inline Jeep 6 cylinders and the engineers redisigned the manifold for greater flow.
Can a 4.0L intake manifold be drilled?
The newer manifold does not have the holes drilled for the dowels. After matching up the manifolds and drilling the new mainfold to accept the dowels the manifold bolted up with no problems. After installation I used my throttle body and injectors with rail.
How big is the crankshaft on a Jeep 4.0?
The stock Jeep 4.0 crankshaft is nodular iron, has 8 counterweights, and weighs 55lb. Stock Jeep 4.0 rods are cast iron, 6.125″ long from center to center, and weigh 660g. The casting no. is 53020126 for all years.
What are the dimensions of a 91-95 intake manifold?
The ’91-’95 intake manifold is aluminium and has equal length 24cm (9.5″) long runners. The runners are rectangular with internal dimensions of 1.625″ x 1.375″, with a cross sectional area of 2.234 sq. in.
The manifold from a 1999 – 2004 is designed to increase horsepower as due to new emission requirements the 1999 -2004 engines lacked the horsepower of the earlier model inline Jeep 6 cylinders and the engineers redisigned the manifold for greater flow.
The newer manifold does not have the holes drilled for the dowels. After matching up the manifolds and drilling the new mainfold to accept the dowels the manifold bolted up with no problems. After installation I used my throttle body and injectors with rail.
What should I replace the exhaust manifold on my Jeep Wrangler?
JDMSPEED New Stainless Steel Exhaust Manifold & Gasket Kit Replacement For Grand Cherokee Wrangler 4.0L Replacement For Jeeps Select 1991-1999 (4.0L Engine Only) Replaces 33007072, 4883385 Exhaust Manifold Set Stainless Steel Front Rear ECCPP Automotive Replacement Exhaust Manifolds pipe Fit for Wrangler Grand Cherokee 4.0L
How many Offenhauser intake manifolds are there?
Intake Manifold, Dual Port, Aluminum, Natural, Square Bore, AMC/Jeep, 199, 232, 258, L6, Each Part Number: OFY-5999DP More Detail… Order this item and get free delivery and handling on your entire order! Offer excludes truck freight and oversize fees. Valid on orders shipped in the contiguous United States. Part Number: OFY-6258C More Detail…