
AFAIK exhaust is one of the only FBO mods you don't specifically need a tune for and if you already have a good dyno tune for intake or headers or whatever else you have, you should be fine to revert your exhaust to stock without any changes.
Full Answer
Is an engine swap a good idea?
An engine swap may sound like a good solution, but it’s important to keep in mind the size of the task and just how challenging getting the right alternative engine solution can be. Because in truth, swapping an engine is an enormous challenge, requiring a huge amount of time, planning and skill to get right.
Do you need custom shafts for an engine swap?
For most engine swaps, custom shafts will need to be fabricated – unless you’ve purchased the engine from a specialist, in which case they should be supplied. These help the new engine connect with the existing front- or rear-wheel drive system.
What is the most difficult part of an engine swap?
Wiring is always a constant problem for people, no matter what size project they are taking on, especially in modern engine swaps. Wiring can be very complex, and it requires a lot of understanding about amperage, wire gauge, relays, and overall circuits.
What happens to the exhaust system when you change engines?
If the engine change is a simple twin cylinder for a twin cylinder of a different capacity, the exhaust system for the engine must be used and should offer few problems. However, if a multi-cylinder engine is replacing a twin or a single, the exhaust system can present all sorts of problems, especially issues of clearance and heat transfer.

What is needed for an engine swap?
Engine Swap ChecklistThe Right Car.An Engine.Engine Mounts.Axles and Drivetrain.Pedals.Shifter.Fuel System.Cooling System.More items...•
Is it legal to engine swap a car?
Your biggest question is whether or not it's legal to swap motors on vehicles. In many states, the answer to this is yes. Some states say yes, but as long as the engine was available for that car or truck model for that year. Some say that as long as the engine was available the year at all, it's OK.
Is an engine swap worth it?
New engines offer a long-term, reliable solution to your car troubles. On the other hand, used vehicles may come with their own set of engine problems. If your used vehicle replacement encounters engine issues, you could end up paying twice as much in the long run.
Does exhaust pipe affect engine performance?
If you have a problem with your exhaust, it will begin to affect the performance of your engine. You won't be able to accelerate as well or as quickly, and you won't get the same power when you do accelerate. This problem will continue to worsen if you do not address the exhaust leak.
Will a swapped motor pass smog?
To ensure compliance, the California Bureau of Automotive Repair requires that when someone changes the engine on a vehicle, it must pass certification and inspection before being allowed to legally operate on California roads. After that, it is subject to the same smog rules as every other vehicle in the state.
Is engine swapping easy?
However, an engine swap, like a kit-car build, isn't an easy process. If you need to reinforce the frame, welding may be involved. Removing the old engine and putting in the new one requires an engine hoist. And if you ask a shop to do it for you, it won't exactly be cheap.
Does an engine swap reset mileage?
An engine swap or engine replacement will not reset the odometer as the odometer doesn't just measure the engine but all of the components of the car. In fact, it's illegal to reset the odometer as it would not accurately reflect the age of other parts of the vehicle.
What else should I replace When replacing an engine?
8 Things You Should Know Before Replacing Your EngineFind and fix the root problem. ... Inspect your new engine. ... Replace the timing belt, gaskets, and seals. ... Don't forget to flush. ... Replace belts, hoses, clamps spark plugs and thermostat. ... Be careful not to drop anything inside your new engine. ... Don't forget the oil change.More items...•
Does an engine swap require a new transmission?
Depending on which engine you decide to swap into the vehicle, you may need to change the transmission. Generally speaking, the more different the engine is that you are putting in, the higher the chance you'll need to swap the transmission.
How much hp does straight pipe add?
about ten hpAnswer provided by. Modifying your car is a great way to make it more powerful! You'll likely gain about ten hp with a straight pipe as compared with five hp or less by just taking off your muffler. Keep in mind that putting on a straight pipe also involves adjusting your fuel injection and otherwise tuning up the car.
How much hp does an exhaust add?
Everything that comes before the muffler, where the pressure is greatest and performance potential is highest, will remain tight and congested. MagnaFlow, an aftermarket exhaust manufacturer, says that its customers can expect horsepower gains of around 10 percent (which is a pretty commonly-quoted figure).
What kind of exhaust gives the most hp?
The included SuperFlow mufflers have a straight-through design for a stronger sound and added power. Thanks to the high quality craftsmanship, Gibson exhaust systems are truly enduring and will serve you well for a long, long time. With this system, you will get the highest horsepower and torque at 1800-3000 rpm.
Why do you need to swap a diesel engine?
This is usually done either because of failure, or to install a different engine, usually one that is bigger and better to make your car more powerful and or economical. Sometimes older engines may have a shortage of spare parts and so a modern replacement may be more easily and cheaply maintained. Swapping to a diesel engine for improved fuel ...
What happens when you put a more powerful engine into a different chassis?
This is usually done either because of failure, or to install a different engine, usually one that is bigger and better to make your car more powerful and or economical. Sometimes older engines may have a shortage of spare parts and so a modern replacement may be more easily and cheaply maintained.
What is a VSC car?
Or Call 866-918-1438. A Vehicle Service Contract (VSC) is often referred to as an “auto warranty” or an “extended car warranty,” but it is not a warranty. A VSC does, however, provide repair coverage for your vehicle after the manufacturer’s car warranty expires.
Do power steering reservoirs need to be changed?
One commonly overlooked modification is that in general all of the reservoirs need to be changed. The cooling system isn’t a big deal, but the power steering reservoir can be tricky. Packaging gets really tight and sometimes a remote mount reservoir is needed.
Do exhaust manifolds need to be modified?
Most people know or have a good idea that the exhaust manifolds are going to need to be modified. However, it isn’t until the engine is sitting in the engine compartment that they realize how complex the issue can be and people can quickly get in over their heads.
Do mechanical fans work on older engines?
Mechanical fans will work OK with older engines, but today’s engines run hotter and require a lot more cooling. Most people just don’t think about specific functionality of the modern engine they are installing and reinstall the mechanical fan or they hook-up a cheap electric fan that doesn’t have enough flow.
Can steering linkage be used at the same time as the engine?
Steering linkage can get tricky when trying to figure out how to navigate past the headers and around everything. In addition to that, many people upgrade their suspension and steering systems at the same time as the engine. With the wide variety of aftermarket components available, sometimes the combination of parts used can require an odd combination of steering linkage.
Why is it frustrating when pieces refuse to come out?
It might be frustrating when pieces refuses to come out or go together, but forcing anything will only cause major damage. Many times, people try to pry something out of their car, but the problem is that there is still one bolt holding it together.
Is it easy to change an engine?
Changing an engine is never as easy as changing an engine. You will spend more time in the scrapyard searching for pieces than you ever thought possible. There are several reports of people attempting this feat, only to end up with a piece of junk at the end of the day.
Is an engine swap equal to a car?
All engine swaps are not created equal, and the cars are ultimately changed by the end of the process. Your new engine might not fit with the hoses and other components from your old engine, which can put you in a predicament.
When changing engines, what must the mechanic do?
When changing engines the mechanic must ensure the cables will not get damaged in use from heat (exhausts) or caught in steering stops, etc.
Why don't my bike sprockets line up?
Besides the obvious problem of the final drive being on the opposite side on some bikes, the sprockets may not line up even though the engine is mounted on the centerline of the frame/wheels. Occasionally it is possible to machine or shim the sprockets to get the required alignment.
What are the limitations of fitting an engine to a frame?
Physical sizes. The first limitation, when successfully fitting another engine to a frame, is the physical size. Needless to say, if the engine is considerably bigger than the original, there may be interference issues such as the header pipes may hit a down tube, or the rocker box may rub against a top frame rail.
Can you change the engine on a motorcycle?
Legal and insurance implications. In many countries it is not legal to change the engine in a motorcycle for one of a different capacity--generally, this relates to a maximum capacity limit. However, older bikes may be exempt from any such laws.
Can two motorcycles have the same gearing?
It is very unlikely that the gearing on two motorcycles of different engine capacities will have the same gearing. Therefore, the mechanic must calculate the gearing he or she will require when changing engines.
Does changing the speedometer make a difference?
Instrumentation and drive ratios. If the speedometer drive is taken from either the front or rear wheels, changing the engine will not make any difference to the accuracy of the meter. However, if the drive is from the engine the ratios must be checked.
Can you fit an engine into a motorcycle frame?
However, although it sounds simple to do, fitting an engine into another manufacture’s frame is not easy and there are many safety implications to consider first. For example, fitting an engine with a larger capacity, and therefore typically with more power, may result in a motorcycle with inadequate brakes.
Step 1: Plan, Plan, Plan
Why did we decide to swap a Miata’s inline-four engine into an MGB instead of a V8 or V6? Well, first of all, we thought the Miata twin-cam better fit the spirit of the car. After all, the MGB was one of the inspirations for the Miata, and MG had experimented with twin-overhead cams in the MGA.
Step 2: Match the Engine to the Chassis
Another reason we chose the Miata twin-cam is that its power curve is a nice fit for the car. As the dyno graph shows, the stock 1.8-liter MGB engine makes roughly the same amount of power as the Miata engine until about 3500 rpm. That’s when the Miata engine’s breathing gets better and its curve starts rising much faster than the MGB’s.
Step 3: Follow the Single-Donor Plan
We pulled the engine, gearbox, wiring harness and ECU from the Miata. The clutch master cylinder, throttle cable and driveshaft would come in handy later, so we set them aside. We decided not to part out anything from the engine bay until we were finished with the transplant.
Step 4: Measure Twice, Cut Once
Some time with a tape measure told us that our MGB was going to need some initial surgery before we could set the Miata engine in place. We used a reciprocating saw to quickly cut off the factory engine mounts, then followed with a cutoff wheel and grinder to make it look like the mounts were never there.
Step 5:Follow The Factory
The Miata engine wasn’t going to clear the MGB radiator, but fortunately we weren’t sailing into unchartered waters. Since 1977-’80 MGBs came with radiators mounted farther forward, we decided to use those same parts to create more space in our engine bay.
Step 6: Making Space
We’ve done this swap before, so we knew that the Miata oil pan would be too deep for our car’s stock crossmember. For the pan to clear it, the crossmember would have to be notched. We also knew that either the front pulley would need to be cut down or the steering rack moved–again, another crossmember issue.
Step 7: Time to Test-Fit
Now that we had the right amount of room in the engine bay, we lowered in the Miata engine and gearbox for the first test fitting. We wanted about half an inch of clearance between the oil pan and the crossmember, so we set the engine on a half-inch piece of plywood.
Why do you need an engine swap?
Here are the most common reasons that some petrolheads choose to do an engine swap: 1 Improved performance and efficiency – the majority of engine swaps are carried out with enhanced performance in mind; it’s considered the pinnacle of tuning up a car to get the most output from it possible. A bigger capacity engine brings more power and torque, which translates to much higher performance for small, light cars that weren’t originally designed for use with a certain type of engine. 2 Revive a classic – imagine you’ve bought a classic car and you want to bring it back to life, you’d do anything to keep it going, right? That’s where an engine swap comes in. By replacing the original with a newer, more modern engine, you can enjoy the thrill of driving an older car without fear that it’s going to conk out on you. Of course, it might be that you can get by with replacement parts, but if there’s a shortage or this gets too expensive, a full engine swap can be the next best option. 3 Fun – whether you’re a trained mechanic or a driveway enthusiast, carrying out an engine swap is the ultimate challenge for those who enjoy fixing and maintaining cars. If you’ve ticked off every other job under the bonnet, a full engine swap could be your next big project.
What is a like for like swap?
Of course, a like-for-like swap is a much simpler task than fitting a non-factory specific ...
Is it good to swap an engine?
An engine swap may sound like a good solution, but it’s important to keep in mind the size of the task and just how challenging getting the right alternative engine solution can be. Because in truth, swapping an engine is an enormous challenge, requiring a huge amount of time, planning and skill to get right.
Is it easy to get a muffler?
Most mufflers are pretty easy to get to. (Except for some of the undertail-equipped bikes. Man, those can be a headache to swap!) You probably have all or most of the tools you need to do this in your toolbox, and the reward is pretty high, considering the minimal time investment you’ll make.
Do slip ons work on motorcycles?
Slip-ons usually offer great looks and killer sound when compared to an OEM system. I don’t care if you’ve got a pancake motor, a triple, or an old two-stroke screamer, mufflers tend to enhance the “voice” of your motorcycle, and plenty of riders find them a bit more visually appealing, too.
Do mufflers only work on bikes?
The sound is probably the driving force behind most exhaust purchases, and a muffler-only system generally tends to capture a bike’s tone at slightly more sane volumes than a full system. (Although I must say, I have heard some mufflers that are nearly ear-splitting.)
