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.
__________________
Name: Jack-in-the-Box -|- Car: 2001 EBP Type SH Gremlin Infested. Do Not Add Water. -|- Occupation: Ex-Engineer @ Boston Micromachines Corporation
I do not need to explain anything to you.
My broken wings still strong enough to cross the ocean with.
My broken wings how far should I go drifting in the wind.
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
Automatic TORQUE Transfer System
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.
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.
__________________
"Most of the shadows of this life are caused by our standing in our own sunshine."
~Ralph Waldo Emerson
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.
Take out the ATTS unit, get an LSD, avoid a lot of hassle, time, and money. I have an SH and while it is cool to say, wanting to swap to have the ATTS ability IMO is not worth it. Like other people have said I think you best bet would be to part out the broken SH. Order a JDM H22 get 220bhp order a LSD, and be pwnin beeches. If you dont wanna do that take out the ATTS unit and just drop the H22 into your base.
Take out the ATTS unit, get an LSD, avoid a lot of hassle, time, and money. I have an SH and while it is cool to say, wanting to swap to have the ATTS ability IMO is not worth it. Like other people have said I think you best bet would be to part out the broken SH. Order a JDM H22 get 220bhp order a LSD, and be pwnin beeches. If you dont wanna do that take out the ATTS unit and just drop the H22 into your base.
You could easily and more affordably get a JDM H22 with an OEM LSD trans then just buying the motor and adding a LSD to the USDM base trans. Also swapping the H22A4 from the SH into the base car isnt going to happen because of differences in the blocks.
I think he's in a pinch that's going to hurt him no matter which way he goes. If he can put off doing all this until he can sell off the good parts from the SH donor car it will work out best for him. I'm thinking you could find a solid used USDM base motor these days for not too much money which might work best if he's in a money and time crunch.
__________________
"Most of the shadows of this life are caused by our standing in our own sunshine."
~Ralph Waldo Emerson
I know you need a car quickly and so do I.
I have a dead SH engine and a good low millage base model engine.
You have a dead base model engine and a good SH engine.
I have an SH car and need an SH engine. You have a base model car and need a base model engine. Is there any way you want to swap engines? or work something else out that solves both our problems. Please email me back if this interests you at all because I think it would help both of us out greatly. Thanks
So followingmortis is already to far into his swap to want to switch engines with me so it looks like I'm going to have to do the swap as well. My swap however is the other direction. I have a SH car with a complete base model engine (including the tranny). What would I have to do to make this swap work? I know the front end is different between the two models so what would I have to do to my SH front end to make the Base model engine and tranny work? I think I need an intermediate shaft to replace the old atts in the sh? What else would I need? base model axles? Has anyone done this swap? This is my first swap so I'm wondering how difficult its going to be? Thanks for any info you can give me!
I was just surfing the net to see if I could fit an SH setup into a base and it seems too much trouble. Ihave a low milage Engine and Trany with the ATTS and need a base h22 Engine and Trany for my 97 prelude. I would be willing to trade.
Quote:
Originally Posted by ren
Hi,
I know you need a car quickly and so do I.
I have a dead SH engine and a good low millage base model engine.
You have a dead base model engine and a good SH engine.
I have an SH car and need an SH engine. You have a base model car and need a base model engine. Is there any way you want to swap engines? or work something else out that solves both our problems. Please email me back if this interests you at all because I think it would help both of us out greatly. Thanks
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. 
