You would have to call Opel GT source for their latest prices. I am pretty sure that their prices will fluctuate according to what is currently available (new,used, or rebuilt). You can turn a 1.9 into a 2.4 with a lot of machine work (Bob Legere/RallyBob wrote an article for ClassiC Opels on how this can be done), but a 2.4 long or short block will probably be a little more expensive, but A LOT less headaches with the machine shop. Either way, a solid tune on a 2.4 should be over 160HP, that means 5-speed Getrag, 9" clutch, and suspension and brakes will have be upgraded to handle all this new found speed. Your exhaust should always be single pipe back to the resonator. I am assuming that this car will be street driven and not race-only, therefore, it is wise to stay with a slightly smaller exhaust pipe to enhance cylinder scavenging and promote low-end torque. A *V*E*R*Y* rough estimate is to add 1/8" per 25 horsepower over stock. (1"7/8 @ 90HP stock, 160HP is 70HP over, add 3/8", would make a 2"1/4)kyles1970gt said:well, how much does the 2.4 run? would that be just a bolt in and go or is there still some fab work to do? l am trying to keep a lower budget, i am only 20, with a wife and kid, so theres where all my money is, so yea, all help would be nice.. Also, what size pipes are you all running for exhaust.. i was thinking on 2" dullies from the head back.. how about it??
Anyone thought about a VW VR6, DOHC version? . . . AWESOME engine that would fit as is. Good 5- or 6-speed mated with this would make very nice power combo.GTJIM said:Am at the crucial discission stage myself and these are some of the options considered:
1) 1900 Standard - new rings and bearings, valve grind and new standard, hydraulic cam, 32/36 Weber and updated exhaust system. A sound used motor is an option here - just bolt it in.
2) 2.0 litre short block or long block(with 2.0 head) with the rest of the bits as above. This can be achieves at least a couple of ways a) Used 2000 engine ("Discontinued" by OGTS) so get lucky on the used market b) Bore the 1900 block 2mm and fit Chevy Pistons - see this forum. Needs a sound four-speed or Getrag five-speed.
3) Source a 2.2 litre CIH Opel engine or short block - call OGTS
Four-speed becomes marginal - requires Getrag
4) Source a 2.4 litre CIH Opel engine or short block - call OGTS
Requires Getrag five-speed
5) Fit a chevy 60 degree V6 with appropriate gearbox and diff.
-see this forum
6) Fit a Buick/Rover all alloy V8 with gbox and diff
7)Fit a Lexus or NorthStar motor g/box & diff to suit
8) Small block US V8 - Chevy/Ford/Chrysler/AMC/other GM
9) Big block US V8
10) V10 Viper or V16 Allison
Listed in order of expense/power/time to complete (or not) as the case my be.
There is a lot to be said for a near standard 1900/2.0 or 2.2