Rudolf_diesel's Air-Water intercooler
Rudolf_diesel's Air-Water intercooler
I am bored and need a challenge so I decided to go with the A/W IC, but taking a different path.
I am going to use this IC, got for $59.00 on eBay.
I am also going to use a manifold from a NA ca. 1976 pictured here:
(I have already started to modify the intake)
I plan on cutting one side of the IC plenum off and welding it to the intake manifold. It may require some fabricating of a transition from IC to manifold or I might get away with just trim the IC to fit.
I will post more pics when I get the IC.
Hey! This was my idea!
Can't wait to see the results, lookin good!
You guys are just awsome! This looks like a great path.
No you guys are all jockin my idea! BTW, if anyone needs it, I can weld aluminum. Shipping might be the problem though.
(10-01-2009, 03:40 PM)kamel Shipping might be the problem though.
(10-01-2009, 03:40 PM)kamel Shipping might be the problem though.
I think we are all on the same page with the I/C design, I have an '03 Cobra I/C core that I was going to use on my intake but I think I will see what I can find at SEMA. I should get another intake before I cut my only one up, I did find the electric Cobra I/C pump sitting around but I would like to get a brushless pump to complete the job.
All great work, this site has some great wrench'n going on.
(09-30-2009, 10:03 PM)Rudolf_Diesel I am bored and need a challenge so I decided to go with the A/W IC, but taking a different path.
I am going to use this IC, got for $59.00 on eBay.
I am also going to use a manifold from a NA ca. 1976 pictured here:
(I have already started to modify the intake)
Take the time to do some clean up porting on the inside of the intake, just make sure there are no sharp edges to the runners. Good job!
I plan on cutting one side of the IC plenum off and welding it to the intake manifold. It may require some fabricating of a transition from IC to manifold or I might get away with just trim the IC to fit.
I will post more pics when I get the IC.
(09-30-2009, 10:03 PM)Rudolf_Diesel I am bored and need a challenge so I decided to go with the A/W IC, but taking a different path.
I am going to use this IC, got for $59.00 on eBay.
I am also going to use a manifold from a NA ca. 1976 pictured here:
(I have already started to modify the intake)
Take the time to do some clean up porting on the inside of the intake, just make sure there are no sharp edges to the runners. Good job!
I plan on cutting one side of the IC plenum off and welding it to the intake manifold. It may require some fabricating of a transition from IC to manifold or I might get away with just trim the IC to fit.
I will post more pics when I get the IC.
Here are some pics of the progress thus far:
(10-08-2009, 09:55 PM)tantank79 Nice!
I like your jig table setup as well.
(10-08-2009, 09:55 PM)tantank79 Nice!
I like your jig table setup as well.
Very professional. Isn't it going to be a bit wide though? I know it will fit a 126's cavern, but it would hit the fender in a W123.
It's a bit late for this but does anyone know what air temps are seen on the intake side? I am worried that heat soak from the engine might actually degrade performance. Certain a good reason to start with the long runners. Man I wish I had a shop like you
(10-09-2009, 08:16 AM)winmutt It's a bit late for this but does anyone know what air temps are seen on the intake side?
(10-09-2009, 08:16 AM)winmutt It's a bit late for this but does anyone know what air temps are seen on the intake side?
It should take up less room than my current set up, but I will do the test fit to see if there are any clearance problems. The weight of the unit is also a concern so I am also planning on adding some support gussets and maybe a strut rod underneath and they will also serve as a mount for a heat shield.
It is nice when you have some cool tools at work - Lathe, Mill, Power tools galore, Plasma, Oxy-Acetylene, MIG, TIG, SMAW - I just need to learn the CNC! - Before the divorce I had everything, but the lathe and CNC.
(10-09-2009, 09:10 AM)ForcedInduction(10-09-2009, 08:16 AM)winmutt It's a bit late for this but does anyone know what air temps are seen on the intake side?
Hot enough to boil 60:40 coolant after ~40 seconds at 18psi.
Heat soak hasn't been an issue for me. The outlet of the intercooler has always been cool.
Mine has silicone boots on both ends to insulate it from conducting engine heat, but Rudolf_Diesel's might since it has indirect contact with the cylinder head.
Wow, I didn't expect it to get that hot. That pretty much resolves the question of heatsoak as the intake manifold gets hot but not that hot.
-Rolf
(10-09-2009, 09:10 AM)ForcedInduction(10-09-2009, 08:16 AM)winmutt It's a bit late for this but does anyone know what air temps are seen on the intake side?
Hot enough to boil 60:40 coolant after ~40 seconds at 18psi.
Heat soak hasn't been an issue for me. The outlet of the intercooler has always been cool.
Mine has silicone boots on both ends to insulate it from conducting engine heat, but Rudolf_Diesel's might since it has indirect contact with the cylinder head.
Just to clarify, thats at the turbo side of the intercooler where the water is boiling. The coolant flow direction is opposite the airflow.
The manifold gets hot from heat conducted from contact with the cylinder head, but there is a significant difference in how hot it feels from before and after the intercooler was installed.
Before, it would be in the burn range to try and hold onto it. After, its "tolerable" hot.
I think machining the manifold to fit plastic insulators on the head face and stud tube halves would make a noteworthy difference.
(10-09-2009, 09:10 AM)ForcedInduction Hot enough to boil 60:40 coolant after ~40 seconds at 18psi.
(10-09-2009, 11:13 AM)ForcedInduction The manifold gets hot from heat conducted from contact with the cylinder head, but there is a significant difference in how hot it feels from before and after the intercooler was installed.
(10-09-2009, 09:10 AM)ForcedInduction Hot enough to boil 60:40 coolant after ~40 seconds at 18psi.
(10-09-2009, 11:13 AM)ForcedInduction The manifold gets hot from heat conducted from contact with the cylinder head, but there is a significant difference in how hot it feels from before and after the intercooler was installed.
Okay, I was up till midnight re-engineering the manifold, it was too big for my liking and I am way happier the way it turned out!
I still need to install the water system, but I took it for test drive and holy shit it flows much better, I am hitting 24 pounds of boost! I need to adjust my boost controller. Boost comes on much quicker and stronger.
Tomorrow I am hitting the junk yard to look for a radiator from a 3 cyl. sprint or something along those lines. I am also going to fab a tank about 4" in diamter and 12" tall to act as a reservoir. I plan on using a MB water heater aux pump, but I am not sure it will be enough. I also plan on using an electric fan for the IC radiator.
Here are some pics:
I had reservations of the original. But that rendition is soo much better.
Looks great! Good job.
.
Yes, the revision looks much better. Can't wait to see the radiator setup!
What are you going to do for bleeding the top half of the IC core? Bryan has to tip his up to get the air out.
(10-10-2009, 09:54 PM)ForcedInduction Yes, the revision looks much better. Can't wait to see the radiator setup!
What are you going to do for bleeding the top half of the IC core? Bryan has to tip his up to get the air out.
(10-10-2009, 09:54 PM)ForcedInduction Yes, the revision looks much better. Can't wait to see the radiator setup!
What are you going to do for bleeding the top half of the IC core? Bryan has to tip his up to get the air out.
Much better fit, I had planned on doing your first revision but will certainly be stealing your revision. I love the valve cover too. When you say the boost is coming on faster / stronger, that is a comparison to ?
(10-11-2009, 01:28 AM)winmutt Much better fit, I had planned on doing your first revision but will certainly be stealing your revision. I love the valve cover too. When you say the boost is coming on faster / stronger, that is a comparison to ?
(10-11-2009, 01:28 AM)winmutt Much better fit, I had planned on doing your first revision but will certainly be stealing your revision. I love the valve cover too. When you say the boost is coming on faster / stronger, that is a comparison to ?
Ah compared to the SAAB ic. Good. As soon as payday rolls around I am getting mine. You said you were adding xtra supports? You are going to mount them to the engine right?
Supports are definitely required. The thin aluminum intake wasn't designed to support weight beyond itself and I have no doubt would eventually break off after a few weeks of vibration.
(10-11-2009, 08:36 AM)Rudolf_Diesel This is in comparsion to the Saab intercooler, which did a decent job, but this is MUCH better.
Awesome work!! Want to sell any duplicates? I think you're going to be very happy with the results from that!
(10-11-2009, 08:36 AM)Rudolf_Diesel This is in comparsion to the Saab intercooler, which did a decent job, but this is MUCH better.
I went to Pick-a-Part today and found a radiator from a Geo metro, 1.0L, 3 Cyl. engine. It's a single core and had a fan and reservoir bottle - I ended up not getting the parts. They wanted $100.00 for everything. I am a cheap basterd and so I said for that price I could buy a better one. Hell, for that matter I am going to build my own! I have found a use for my old Saab IC, it is now going to be an aluminum radiator. I started off by cutting off the tanks. I will do the tank mock up with my "magic cardboard".
Here are a couple of pics so far:
Starting to cut the tanks off of Saab IC
Tanks removed
Stay tuned!
Here are pics of the completed tanks:
(10-12-2009, 12:03 AM)Kiwibacon(10-11-2009, 10:28 PM)Rudolf_Diesel Here are pics of the completed tanks:
Is the welding yours? It's very tidy.
(10-12-2009, 12:03 AM)Kiwibacon(10-11-2009, 10:28 PM)Rudolf_Diesel Here are pics of the completed tanks:
Is the welding yours? It's very tidy.
(10-12-2009, 12:15 AM)Rudolf_Diesel Yes, it is me, thank you, but I am no where near the level I would like to be.
I get better each time I do it - It's all about practice, practice, practice.
The key is a steady hand. The biggest aluminum welding job I had was when I was on the TV show "Monster House" My project took me four days to complete. It was some huge aluminum sheets that I had to weld, outside with the wind blowing my gas away - what a PITA.
My favorite welding is MIG, but I can do em all. I started welding when I was 12 years old and it just came natural.
(10-12-2009, 12:15 AM)Rudolf_Diesel Yes, it is me, thank you, but I am no where near the level I would like to be.
I get better each time I do it - It's all about practice, practice, practice.
The key is a steady hand. The biggest aluminum welding job I had was when I was on the TV show "Monster House" My project took me four days to complete. It was some huge aluminum sheets that I had to weld, outside with the wind blowing my gas away - what a PITA.
My favorite welding is MIG, but I can do em all. I started welding when I was 12 years old and it just came natural.
Quote:I can acheive good results with stainless and mild steel, I've never tried aluminium. The fact it doesn't change colour before turning into a big blob on the floor speaks clearly about the welding difficulty.
Quote:I can acheive good results with stainless and mild steel, I've never tried aluminium. The fact it doesn't change colour before turning into a big blob on the floor speaks clearly about the welding difficulty.
Aluminums still easiest for me. Love stainless, but steel is best reserved for mig. Not that I can't do it, its just much faster with a squirt gun. Rudolf you are my hero, i'll definately be using this design, but may be incorporating a header. ah ah ah
(10-13-2009, 02:10 PM)winmutt Does the saab ic/radiator leak?
(10-13-2009, 02:10 PM)winmutt Does the saab ic/radiator leak?
I did not measure the weight, but I would guess the whole thing weighs around 10-15 lbs.
Here are some more pics, almost complete:
Reservoir Tank with Mag-lite Cap
Another view of tank
Resevoir tank installed
Radiator installed
Pump installed
Coolant used, the entire system holds about 2 gallons
Intake manifold support, there is a gusset underneath as well.
I should be finished tomorrow.
Finished up today after work. Had to re-powdercoat filter intake tube, lengthen hose from radiator to overflow tank and mount brackets for air cleaner air dam.
I took for a 20 mile test drive and all seems well. I have lost the resonance at 2200 -2500 adding water did the trick, just as I thought. The EGT's never got above 850, they got up to 1050 with this set up and no water. The manifold would be too hot to touch with out the water, now you can put your hand on it after the 20 mile drive and keep it there as long as you like.
When I test drive, I drive it like I stole it - Same when I test drive a car, that really pisses off the salesman So I was able to get some good comparisons to berfore added water/coolant - All seems good and I will keep you posted on the progress.
I am also waiting for one more piece to complete the installation - a filler neck and cap from a Polaris qaud via ebay $13.00 for the neck and cap + $10.00 shipping. The local dealer wanted $60.00 for the two pieces.
This weekend I am going on the poker run and can have a few others see what they think of the accelleration and overall performance. I am at the point where I cannot really tell how it is doing because I don't have a comparison.
Stay tuned for the next project - VNT turbo on its way!
(10-19-2009, 09:03 PM)Rudolf_Diesel I am at the point where I cannot really tell how it is doing because I don't have a comparison.
(10-19-2009, 09:03 PM)Rudolf_Diesel I am at the point where I cannot really tell how it is doing because I don't have a comparison.
(10-20-2009, 12:35 AM)Syncro_G(10-19-2009, 09:03 PM)Rudolf_Diesel I am at the point where I cannot really tell how it is doing because I don't have a comparison.
This is where an accelerometer comes in handy. If you have an iPhone already, you might try getting the dynolicious app so you can do real comparisons of acceleration.
(10-20-2009, 12:35 AM)Syncro_G(10-19-2009, 09:03 PM)Rudolf_Diesel I am at the point where I cannot really tell how it is doing because I don't have a comparison.
This is where an accelerometer comes in handy. If you have an iPhone already, you might try getting the dynolicious app so you can do real comparisons of acceleration.
Accurate weight is important for that, use a certified truck stop or race scale.
Talk about wow, love the set up, sure wish I finish school quicker.