going hybrid?
#1
going hybrid?
Well the car is reaching the 105k service range here very soon... and im wondering if it is worth it to spend the possible $700+ or spend the extra money on the 2.5L block...
i currently own a 2003 wrx and i have been looking everywhere spent the last 3 days looking for a thread that will help! but no luck...
what i am looking for is basically a list of everything i would need to swap my 2.0L for a hybrid motor from start to finish!
can anyone help?
i currently own a 2003 wrx and i have been looking everywhere spent the last 3 days looking for a thread that will help! but no luck...
what i am looking for is basically a list of everything i would need to swap my 2.0L for a hybrid motor from start to finish!
can anyone help?
#2
Churro Aficionado
iTrader: (38)
If you still have good compression on the stock block, theres no reason to go with the 2.5 unless you want to then go bigger turbo and tune it for more power.
If you do go 2.5 you will prolly need new heads. The 02/03 are prone to cracking inside/outside the sparkplug holes.
So then if you need new heads, here your next cross road. You could get a full longblock and run AVCS, but then you will need a wireharness and ecu. Otherwise you could still run 2.0 heads and will have slightly higher compression.
You will also want larger injectors than the stock 03. I think bugeyes stock are 420/425cc? I would at least go with STi pinks or the 07 wrx which are 560/565ish cc. (unless you are gunna go big turbo, then you might as well get larger injectors)
If you do go 2.5 you will prolly need new heads. The 02/03 are prone to cracking inside/outside the sparkplug holes.
So then if you need new heads, here your next cross road. You could get a full longblock and run AVCS, but then you will need a wireharness and ecu. Otherwise you could still run 2.0 heads and will have slightly higher compression.
You will also want larger injectors than the stock 03. I think bugeyes stock are 420/425cc? I would at least go with STi pinks or the 07 wrx which are 560/565ish cc. (unless you are gunna go big turbo, then you might as well get larger injectors)
#4
Churro Aficionado
iTrader: (38)
you could run the stock td04 and intercooler for the break in tune (first 1000 miles or so). That might help offset some of the cost right up front. But if you do want more power then the turbo/intercooler will be needed.
Even if you're going to go hybrid, you will prolly need new heads (due to the cracking).
2.0 heads will be "plug-n-play" with what you've got.
2.5 will need the wireing harness/ ecu. Unless you want to go thru the trouble of plugging up the AVCS.
You will need lots of gaskets and prolly all the hoses on the motor will need to be replaced due to age.
Even if you're going to go hybrid, you will prolly need new heads (due to the cracking).
2.0 heads will be "plug-n-play" with what you've got.
2.5 will need the wireing harness/ ecu. Unless you want to go thru the trouble of plugging up the AVCS.
You will need lots of gaskets and prolly all the hoses on the motor will need to be replaced due to age.
#5
VIP Member
iTrader: (17)
Join Date: May 2005
Location: Sunnyvale, CA
Posts: 22,776
Car Info: '13 BRZ Limited / '02 WRX
This is in response to the first part of your post; 105k miles is nothing to be worried about. OneManArmy is at 180k, I'm at 128k, others are in the same area and higher without issues.
Also, I haven't been the nicest to my car!
Also, I haven't been the nicest to my car!
#7
Registered User
iTrader: (3)
Join Date: May 2005
Location: Milpitas
Posts: 847
Car Info: 05 WRX Wagon and 08 Civic Si
Yep it is going to cost big $$$$ to go hybrid trust me i'm only half way to getting mine in, i wish i knew about the 02 head issue before i bought the motor with 02 heads on it already, i might have to send my 05 heads to EQ and get them done up
#8
Registered User
iTrader: (1)
^^^ It does cost a lot of money if you want it done right. Along with the block, you will want to get a master gasket kit for peace of mind. You wouldn't want gaskets or seals to leak or fail in your brand new engine. I would also get the head service from EQ. I went with thicker head gaskets only because I ran out of money for my budget after having to buy new heads. It gets the job done, but not ideal if trying to run higher boost levels.
If you search on nasioc, you should find a list of parts that you will need. I say you should start saving your money now if you have decided to go hybrid. Good luck.
If you search on nasioc, you should find a list of parts that you will need. I say you should start saving your money now if you have decided to go hybrid. Good luck.
#9
you could run the stock td04 and intercooler for the break in tune (first 1000 miles or so). That might help offset some of the cost right up front. But if you do want more power then the turbo/intercooler will be needed.
Even if you're going to go hybrid, you will prolly need new heads (due to the cracking).
2.0 heads will be "plug-n-play" with what you've got.
2.5 will need the wireing harness/ ecu. Unless you want to go thru the trouble of plugging up the AVCS.
You will need lots of gaskets and prolly all the hoses on the motor will need to be replaced due to age.
Even if you're going to go hybrid, you will prolly need new heads (due to the cracking).
2.0 heads will be "plug-n-play" with what you've got.
2.5 will need the wireing harness/ ecu. Unless you want to go thru the trouble of plugging up the AVCS.
You will need lots of gaskets and prolly all the hoses on the motor will need to be replaced due to age.
^^^ It does cost a lot of money if you want it done right. Along with the block, you will want to get a master gasket kit for peace of mind. You wouldn't want gaskets or seals to leak or fail in your brand new engine. I would also get the head service from EQ. I went with thicker head gaskets only because I ran out of money for my budget after having to buy new heads. It gets the job done, but not ideal if trying to run higher boost levels.
If you search on nasioc, you should find a list of parts that you will need. I say you should start saving your money now if you have decided to go hybrid. Good luck.
If you search on nasioc, you should find a list of parts that you will need. I say you should start saving your money now if you have decided to go hybrid. Good luck.
Thank you all for the ideas and help!
but keep the input coming!!!
#10
hell i have decided to go with the hybrid motor... I have wanted to go with the hybrid motor for a while now!!! I do not see any reason in the world to do a ton of maintenance on my motor now when i could spend the money on doing the same maintenance on a motor that i have always wanted and at the same time have nearly a brand new motor...
now the only thing is to find a sti short block!!!
Any suggestions?
now the only thing is to find a sti short block!!!
Any suggestions?
#11
Registered User
Join Date: Jun 2011
Location: Kittanning, Pennsylvania
Posts: 16
Car Info: 2006 Subaru WRX
We are doing working on a Hybrid project right now. Here are some things you you want to keep in mind with the build.
1. Have the heads serviced in the process of service have the heads ported and polished
2. Purchase ARP Head Studs, much more durable than the Factory Head bolts plus you never want to reuse OEM Head bolts due to thread stretch issues.
3. Cometic has head gaskets that are recommended for the Hybrid build 1.3mm thick
4. If doing the sti trans swap with the project be sure to get the 6spd flywheel and clutch kit
5. Get a complete Master Kit for the rest of the gaskets
6. Our set up deleted the tumbler valves far as the the wiring harness goes
If you have any questions feel free to contact us we will do our best to help
1. Have the heads serviced in the process of service have the heads ported and polished
2. Purchase ARP Head Studs, much more durable than the Factory Head bolts plus you never want to reuse OEM Head bolts due to thread stretch issues.
3. Cometic has head gaskets that are recommended for the Hybrid build 1.3mm thick
4. If doing the sti trans swap with the project be sure to get the 6spd flywheel and clutch kit
5. Get a complete Master Kit for the rest of the gaskets
6. Our set up deleted the tumbler valves far as the the wiring harness goes
If you have any questions feel free to contact us we will do our best to help
#12
Registered User
iTrader: (3)
Join Date: May 2005
Location: Milpitas
Posts: 847
Car Info: 05 WRX Wagon and 08 Civic Si
a stage 1 shortblock from GST is a pretty good deal, normally a stock short block from subaru is around $2900.00 and the GST block has the upgraded pistons . it really depends on how much power you want to make on what you should purchase.
my block is a stock EJ257 and the pistons were replaced with wiseco's and cosworth oil pump everything else is stock, then heads were ported 1mm larger valves and cosworth cams and springs. working on getting the turbo and injectors now and then she's going in.
my block is a stock EJ257 and the pistons were replaced with wiseco's and cosworth oil pump everything else is stock, then heads were ported 1mm larger valves and cosworth cams and springs. working on getting the turbo and injectors now and then she's going in.
hell i have decided to go with the hybrid motor... I have wanted to go with the hybrid motor for a while now!!! I do not see any reason in the world to do a ton of maintenance on my motor now when i could spend the money on doing the same maintenance on a motor that i have always wanted and at the same time have nearly a brand new motor...
now the only thing is to find a sti short block!!!
Any suggestions?
now the only thing is to find a sti short block!!!
Any suggestions?
#14
iClub Silver Vendor
iTrader: (12)
I would highly recommend a built shortblock for that application. Chances are the stock pistons won't last too long and you will have to do another rebuild. Our basic built shortblock would be a great fit for your power goals. As far as the heads, check out our CNC program for hybrid builds. We've been providing this service for people and shops all over the country and everyone is very happy with the results as compared to some of the other hybrid solutions.
Thanks
-- Ed
Thanks
-- Ed
#15
I would highly recommend a built shortblock for that application. Chances are the stock pistons won't last too long and you will have to do another rebuild. Our basic built shortblock would be a great fit for your power goals. As far as the heads, check out our CNC program for hybrid builds. We've been providing this service for people and shops all over the country and everyone is very happy with the results as compared to some of the other hybrid solutions.
Thanks
-- Ed
Thanks
-- Ed
I plan on coming to you for your head CnC service! already had that all planned out. But as for the block what all should i upgrade? just pistons and rods? or is there more you would suggest to upgrade in order for this motor to have these numbers and be reliable?
thanks