Transmission Troubles: Transmissions are something of a weak point. The earlier version, employed four separate inlets into the cylinder head. If you are increasing your vehicles power, then you will inevitably put more stress on the clutch and transmission, which is when you require an uprated clutch. Interior Space: Early interiors are generally roomier but more Spartan than the later 1. Also, maximum lift is limited by mechanical considerations such as valve spring compression before coil bind and physical size of the cam lobes, which must pass through the cam bearings for installation. Many people ask about minor modifications to improve handling, etc.
The intake valves are 36mm in diameter and the exhaust valves are 31mm in diameter. Sports cat, or de-cat pipe not road legal and tubular manifold give further power gains. The K20 conversion is absolutely undetectable from the outside except by sound, making this a drag-race sleeper for the cognoscenti and a brilliant way to knock that Mustang next to you at the stoplight down a couple of pegs. This allows them to run at high r. A mating flange is supplied. They also introduce some negative camber into the front which reduces the stock understeer.
When installing this baffle, we use two 128 pan gaskets, one on each side of the baffle. This passage extends into the water outlet area on the end of the cylinder head. Free flowing exhausts get the gases out of the engine quicker, and help improve power and acceleration, especially at higher revs. That way you can avoid the biannual smog checks required for cars from 1976 or later. Larger and taller drivers tend to prefer the 1. This swap results in 200 to 300 horsepower and a robust six-speed transaxle; it does not disrupt the vehicle balance.
So please do not contact us about fiats manufactured after those years. The power increases also, but a larger waste gate would be required to prevent destructive detonation. It may be necessary to turn off the engine, repeat the bleeding and refill the cooling system a couple of times during this procedure. Some aftermarket units are designed to bolt into the top of the stock shock tower and provide camber adjustment by rotating the unit to different positions. There are secondary criteria, but generally one could start with a chassis from almost any production year and build up the car as desired.
The intake valves on both engines are 36mm in diameter. Running the valve contact out to the edge does require frequent replacement of the valves, however. We stopped brainstorming after that. Also it will not fit cars which have air conditioning. By controlling the oil in the pan with this baffle, the oil level can safely be run higher than normal, with a wet sump system. It is important to ensure that the foundation is in good order.
The same comments about low speed fuel economy apply to these carburetors as well as the twin downdrafts, of course. A more aggressive camshaft, along with a dual Weber conversion and a header, will quickly add 20 to 25 percent in horsepower and torque. Even a replacement element alone can add a couple of horses, and you never have to replace it, so they quickly pay for themselves. However, in order to accomodate the enlarged exhaust valves, the new valve seats actually overlapped. Inlet breathing volumetric efficiency is also restricted by the stock carburetors and intake manifolds, or fuel injection systems.
One way to solve this problem is to install a pickup tube, into this port, which extends down to the bottom of the float bowl. The factory had a solution to bleed the air out of the system. All are now one-piece cables. The crank is identical to the 1100cc crank. On the other hand, performance is definitely enhanced by enlarging the intake port and valve size. The bracket which connects to the rear brake load compensator should be connected under the new spacer, to maintain the proper brake bias. Fiat no longer supplies internal parts for these and has superseded them with welded assemblies for replacement.
We don't recommend this practice, because this puts bending stresses on the ends of the trailing links which they are not designed to handle. Customers who have tried both the 40 downdraft carburetors, and the 45 side-draft installation, say that the extra performance of the 45 side-drafts easily justifies the extra effort required for installation. They include feet brackets to weld onto the chassis floor but do not include any fitting bolts. Also, the selection of the optimum cam profile is closely related to other breathing modifications to the head, carburetion, and exhaust system. When water runs out the tail pipe on one of these engines after it has been worked on, the cause usually turns out to be the use of an early type thermostat housing gasket. All of the 1500cc engines came with Bosch electronic ignition systems. The stroker crank makes a tremendous improvement in low and mid-range torque and allows the use of more radical camshafts without losing low speed flexibility.
All manufacturer names, symbols, and descriptions used in our images and text are used solely for identification purposes only. We are a full line Fiat Parts distributor. It was produced from 1974 to 1988. We use Carrera units for racing, but they are designed to work only with Carrera shocks and require some fabrication work to adapt to the Fiat shock towers. The light s were illuminated via a counter installed in the path of the speedometer cable a two-piece cable, one to the counter, one to the speedometer. They are both located under the dash and thus require some effort to change.