Hello all, I'm doing a Base model swap to an SH Model. So I guess the only question i have is, Other than the Transmission, Axles, Engine, And ECU, Is there anything else I need to swap over from my donor car?
Well, I have one Prelude that the engine is bad in, and an SH that the engine is good in but the body is bad. So I'm taking the SH engine and putting it in a good body. I did look around, but i did not notice the other thread I apologize.
Wait wait....you are swapping an SH Engine into a Base model prelude? I know you said you have a donor car but that's an odd transplant. Most people do a Base Engine into an SH model prelude.
Good luck.
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As long as you take the SH engine, tranny, ECU, harness, and intermediate shafts and install them on the base chassis, you should be ready to go.
However, if you're going to do this, it will be easier to do the following:
take the engine from the SH, and fab the tranny from the base model to fit the SH block. That way you'll be getting the benefit of the SH motor without the hassle of ATTS. Also, you won't have to swap the intermediate shafts. I think if you do this, and use your base ECU and harness, you'll be in good shape.
This would basically be a SH->base swap, but doing it in a base chassis instead of an SH chassis. See what the SH->base guys did, and do that to your SH block and put it into your base chassis; I guess is what I'm saying.
I guess I don't understand why everyone swaps out the ATTS. Is there something wrong with it? I plan on auto-x and track day running this car, I thought the Super Handling version would be the best. I understand that it limits HP to about 250 max, but that is plenty on the tracks I run. Is there something else I don't know about, sorry I'm new to Preludes. Thank You
I guess I don't understand why everyone swaps out the ATTS. Is there something wrong with it? I plan on auto-x and track day running this car, I thought the Super Handling version would be the best. I understand that it limits HP to about 250 max, but that is plenty on the tracks I run. Is there something else I don't know about, sorry I'm new to Preludes. Thank You
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Quote:
Originally Posted by followingmortis
Well, I have one Prelude that the engine is bad in, and an SH that the engine is good in but the body is bad. So I'm taking the SH engine and putting it in a good body. I did look around, but i did not notice the other thread I apologize.
sensors. theres like a dozen. atts control unit. suspension arms and front sway bar on the SH is specific for the SH.
Im no genious, but in short, atts is not worth the hassle, and goin out of your way to install the atts and all the components that are required(ecu, etc.), adds even more hassle, and would be a double negative of the same thing(atts itself and the fact that you had to install it). In other words, try LSD(not the drug...). Good Luck.
I guess I don't understand why everyone swaps out the ATTS. Is there something wrong with it? I plan on auto-x and track day running this car, I thought the Super Handling version would be the best. I understand that it limits HP to about 250 max, but that is plenty on the tracks I run. Is there something else I don't know about, sorry I'm new to Preludes. Thank You
If you had an SH to start with, it wouldn't be a problem. But putting an SH drivetrain into a base chassis is simply not worth the time and money. If you really wanted ATTS, you should have gotten it to start with. But if you've got a busted base, your money is better spent on a swap and an LSD.
However - as I understand it, you've got these parts sitting around. So if you've got an SH block with tranny, make it fit your chassis. yeah, it's extra work, but free parts are free parts.
I have a Prelude SH with a dead engine and I have a buddy that has a base model prelude engine (only the motor). Can I swap the base model engine into my SH prelude but still keep the SH tranny and ATTS? What do I need to do to Modify the base model block to fit a SH tranny and the ATTS unit? Am I better off to swap the whole front end into the base model style? I'm looking for the cheapest alternative. thanks
FYI there's no reason the suspension components would need to be swapped over.
yeah your right, but you might as well if your in there. the SH suspension setup(radius rod...ETC.) eliminates torque steer and overall prob a better fitment.
im just saying if your gonna do a swap like that, make it a REAL SH.
I have a Prelude SH with a dead engine and I have a buddy that has a base model prelude engine (only the motor). Can I swap the base model engine into my SH prelude but still keep the SH tranny and ATTS? What do I need to do to Modify the base model block to fit a SH tranny and the ATTS unit? Am I better off to swap the whole front end into the base model style? I'm looking for the cheapest alternative. thanks
You can't do this. The engine block on the base is cast differently. You will need an SH engine to solve your problem.
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can I get a base model tranni to put on the base model engine and then put them both in the SH car? If this is possible what other mods are nessasary and what else would I need to buy? Thanks alot
Yeah here is the story so it may make it a little easier for you to understand where I'm coming from. I bought a Prelude from someone thinking it was a good car. Drove it for awhile and the engine decided to go boom, meaning basically the belt snapped and then went to fix that and the head gasket is bad. I was going to fix all that one someone offered me a low mileage 97 (same year) prelude SH for 800 dollars (salvage title) So i have 2 entire cars, one base one SH not to much money, and the SH engine and tranny are in perfect shape, so it was cheaper for me to buy that whole other car to swap in, than to repair the old engine. PLUS I get to part out everything on the other car that I don't need. Maybe it makes a little more since now. I didn't know ATTS was bad, but I just need a car right now, I can worry about the performance later.
So from what I see I need.
Engine, Tranny, ECU, ATTS Sensors, Harness. IS that it or is suspension necessary?
I think you're missing how we're all telling you that its simply not worth it. THere's a good chance you'll wind up throwing codes or run into some other problems that nobody will be able to assist with since from what I know its never been done. I stand by me saying sell all the parts you can from the SH and use that money to fix or replace your base motor. I'm not trying to be a dick but just trying to save you some pain and suffering.
Yeah here is the story so it may make it a little easier for you to understand where I'm coming from. I bought a Prelude from someone thinking it was a good car. Drove it for awhile and the engine decided to go boom, meaning basically the belt snapped and then went to fix that and the head gasket is bad. I was going to fix all that one someone offered me a low mileage 97 (same year) prelude SH for 800 dollars (salvage title) So i have 2 entire cars, one base one SH not to much money, and the SH engine and tranny are in perfect shape, so it was cheaper for me to buy that whole other car to swap in, than to repair the old engine. PLUS I get to part out everything on the other car that I don't need. Maybe it makes a little more since now. I didn't know ATTS was bad, but I just need a car right now, I can worry about the performance later.
So from what I see I need.
Engine, Tranny, ECU, ATTS Sensors, Harness. IS that it or is suspension necessary?
1st, you should've told this story in your original post and then ask your question. Then there wouldn't have been so much speculation as to what you're trying to accomplish.
So let me get this straight:
-You own a base, busted engine.
-You own a salvaged SH, good engine.
-You're trying to find out what you need to do to swap the SH engine into your base.
Yes this is very true, I should have explained a little better and I do apologize. And yes I need this vehicle ASAP as it is my only and im luck enough to have a ride to my work. But yes
Base (blown engine)
Salvaged SH (great engine)
No money or time to fab stuff, just enough time to swap one to the other. All I need to know is everything I need from the other car, but i think i have a good idea, I think im just gonna drop the cradle with everything still attached and just swap the whole front end.
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I know you said you have a donor car but that's an odd transplant. Most people do a Base Engine into an SH model prelude. 
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