Trunk Mount Intercooler MR2 T

[Love Doctor]

I'm considering doing a Trunk IC instead of the side (Gr. or Sp.). I'm thinking this would be a less expensive alternative to those two classic IC. Is this true? If so, would it be worth the trouble in terms of cost, modification and over all performance? Just trying to figure out the Pros & Cons.

Your 2 cents please.... :)

PEACE-

[lofer]

not worth it, a2w would be better if you want to eliminate the side mount and not have to fab a tmic. and you can keep your trunk.Besides, you can fit a a2w anywhere and eliminate a bunch of ic piping . Just my 2 cents.

[MR2driver]

Depends on your power goal. A2W is great for 1/4 mile runs, but not really for road racing. So it also depends on what you want the intercooler for. It would be cheaper to about the same to do a trunk mount rather then a side mount, but that is only if you are doing all the fabrication yourself.

[lofer]

well, for road racing you would need a resevoir , but a good heat exchanger and a good fan to cool it with the right pump calibrated for the core /resevoir/heat exchanger will cool very well.Water is easier to cool that air. Those trunk mounts are huge , you would see some pressure drop , and the 90 degree bends to the manifold would make you want a side entry intake mani to regain some throttle response for accelerating ect.Antifreeze with distilled water doesnt really boil that fast anyway.Just some pros and cons.

[MR2driver]

A lot of extra weight with A2W, probably an extra 50lbs over an A2A. Not to mention the complexity and cost. If you have a tmic mounted correctly, you will gets temps near ambient. On a road course a A2W is not going to do much better then ambient. There is a guy in Miami making near 800hp and he uses and A2A intercooler.

[Love Doctor]

Well my particular application is for 1/4 runs. I just wanted something that flows better and inherently cooler temps. The Greddy kit, for just under $ 900, can do this. I just thought for $ 900 there might be a better way...

BTW, my power goal is 300RWHP (I have a 2gen US spec setup).

Correct me if I'm wrong, but some of you guys run the original IC in this hp range. Maybe I should just improve the IC piping and install a larger or better IC fan? It would sure save me some dollars yall. :naughty:

PEACE-

[Orion ZyGarian]

No. Stock MkIII Supra and MR-2 IC's BLOW (no potential pun intended)

Personally I'd go top mount...I dont think a2w setups work well on the street.

[Slash]

Personally I'd go trunk mount...I dont think a2w setups work well on the street.

There, now your 100% correct instead of 93.3~% correct.

[Orion ZyGarian]

uhh...what?

[Love Doctor]

So you are saying that just by upgrading the IC pipes on a stock IC will not allow a good 300RWHP goal achievement?

If this is the case, looks like the side mount Greddy will be the best for the dough.

I still wonder with so many IC out there for under 250 bones, isn't there one that will fit the application of the MR2 side mount need? Man, its just hard to believe. :mad:

PEACE-

[lofer]

well, theres a guy in the for sale forum selling an a2w alltrac ic core and original pump(the two hardest things to get money wise and availability) for 250.00 bucks. Thats a good deal. It fits almost stock like and will perform great in the 1/4 mile , and for daily driving. You can use all the rubber hoses from your stock set up with a metal flange for your bov until you can have a custom one made .Also eliminate alot of piping.Its a very streetable setup, even better than the alltrac original setup. You run the water lines under the stock heat sheild under the car all the way to the front.Mine actually fits right in front od both the ac heat exchanger and the radiator with a 850 cfm pusher fan on it. I have the original alltrac heat exchanger wich is very big.The heat exchanger run to the front of the car is the key to setup ability to pull the hot water/antifreeze to the heat exchanger, cool the fluid , push it back to the ic while on and off boost.And for 1/4 mile runs you can implement a small resevoir to fill with ice and have below ambient intake temps. Its A night and day difference in performance when the a2w is working properly.

[Love Doctor]

Although the A2W Intercooler sounds good, I just dont want to add anymore weight plus worry about additional hoses and stuff....

So, Im going to try simply adding better IC hoses. I found this place below:

http://www.turbohoses.com/turbokits.htm

Looks like for a couple hundred duckets I can upgrade my IC pipes and hoses. Anyone has a better angle on this? Please share. :naughty:

PEACE-

[Slash]

What it really come down to doc is if you want to go fast and not add weight or complexity then you need to go trunkmount, There is no other solution for 300whp on a Gen 2.


And Orion, you said TOP mount, and i re-quoted you to say trunk mount. which is different.

[Love Doctor]

If a Trunkmount IC and a Greddy side cost about the same ($75 give or take), I rather go with the side mount.

Both of these IC should be good for my "about 300RWHP goal" correct?

So, if this is the case... I'll go for the Greddy. Besides, I just saw some pics of a few trunkmount applications and they had more bends that a question mark. :wtf: = LAG

PEACE-

[lofer]

yea the major bends are a turn off. I think the greddy or spearco will suffice for 300 rwhp just fine. Upgrade those pipes like you said and youll be in there like swim wear. Upgrading your fuel system is just as important , but I guess thats a whole other topic.I personally like the spearco better as far as the flow design and I hink there are about the same in price.Theres a local pro drag racer who is sponsered by spearco/turbonetics , you might get a better deal through him, I dont know,but cant hurt to try.
Good luck with your goal btw

[Orion ZyGarian]

And Orion, you said TOP mount, and i re-quoted you to say trunk mount. which is different.

I see...whats the difference? Top mount too low in the engine bay on a 3S? "Trunk" mount (should be hood...hood is over the engine and trunk is for leftovers) mean its at the top and the hood is cut for it? Or is trunk mount actually that...up in front?

[Love Doctor]

Check this out:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=33742&item=7987486887&sspagename=WDVW

Can anyone tell me where the hot air that comes out of the intercooler is suppose to go? The piping on the this probrably would cost too much and it would end up with big time LAG.

I hate LAG on BF2 and even more on a Turbo car! :mad:

PEACE-

[MR2driver]

You would need to cut a whole in the trunk floorboard. That thing has a nice sized core. Too bad he doesnt include the trunk lid in his auction.

OMG Orion. The MR2 has a trunk, right behind the engine bay. So when we speak of trunk mount, it is actually an intercooler mounted in the rear of the car in the trunk. The MR2 has a trunk and front compartment.

The major downside to the side mount is the surface area. The largest core you can realistically stick in there is 400 cubic inches where as the trunk you could mount a much larger intercooler. Another downside is that it's mounted in the engine bay, so it heats up easier.

For 300hp any side mount kit will do.

[Orion ZyGarian]

OMG Orion. The MR2 has a trunk, right behind the engine bay. So when we speak of trunk mount, it is actually an intercooler mounted in the rear of the car in the trunk. The MR2 has a trunk and front compartment.

:lmao: Thanks for the clarification

[Love Doctor]

Look again, the trunk lid is included (Well for another $ 100.00 bones). Not sure how much air you would get with those fins, but I guess you can always install a puller fan to help.

For my 300rwhp, I will stick to a side mount. I just have to find one.

NEW:

Just bought a 3" downpipe. I'm thinking about installing my parts as soon as I receive the downpipe. I now have:

1) CT20B (Never sold it)
2) SAFC II (Bought it a month ago)
3) FPG (Yeah, I didnt make it... I simply through down $ 80 bones for it)
4) 3" Downpipe (Being shipped)

I think this should be enough stuff to do my next install and dyno tune over at XAT. :naughty:

The only thing is... is that I will be running the stock IC setup. What boost should I run untill I find a Greddy side mount IC? Will I need a new clutch cause of the extra power? :dunno:

PEACE-

[StreetRacingOnline]

you speak of lag, but a trunk mount has less piping than a front mount on a eclipse (if done correctly). you will never feel the lag of a trunk mount vs side mount.

[Love Doctor]

Are you sure, cause the Trunk mount piping I've seen have more bends than a question mark.

The throttle body inlet is facing towards the front of the car and the Trunk mount is behind it..... looks like a 90degree bend, ouch.

PEACE-

[Slash]

Love doctor, on my old Z31 my intercooler piping made 16 turns through the wheel wells and all over the place. I used to joke with Mattback that air leaving my turbo had to mapquest the intake manifold. The guy from miami who built the car totally sucked at piping.. HOWEVER. I spooled a T78 to 15psi by 3100 RPM despite 16 turns, and around 10 feet of piping....

Seriously, trunk mounts are simple as pie....

[MR2driver]

I would add a couple more things to your list:

550cc injectors
Fuel pressure regulator

They really won't be able to effectively tune it with out the fuel pressure regulator since you are using a AFM to meter the air. Stock intercooler should be fine, just get an 8" spal fan for it. You should be able to run 16psi safely. You will also eventually need a clutch. You can get used OEM supra injectors for pretty cheap.

[Love Doctor]

Ok I will add the injectors to my list, but I already have the Fuel Pressure Regulator... I just referenced it as FPR above.

Anyway, if its true about the piping on a the trunk mount IC.... I maybe interested in this again, but who can help me with the piping and the modification to my MR2 chassis? Who has done this and has the know-how?

PEACE-

[StreetRacingOnline]

its quite simple. only draw back to trunk mount is losing space and cutting up your car. but the plus is the surface area you get and the larger heat sink capability

[MR2driver]

There are several different ways to mount it in the trunk. Vertical on the floor, vertical near the lid, horizontal near the rear. Then just start measuring and drawing. You also need to pick a core. Once you get the intercooler itself, then you can start designing it. There are plenty of cheap ones on ebay. Try not to get one with squared off endtanks, though.

[lofer]

you could mount the ic underneath the truck too lol. Ive seen that done on a drag mr2 in Japan .oh btw you probably know this or have it done already , but youll want to get a bigger rail for those injectors, if not youll get a loss of pressure across the rail and have unequal fuel pressure because the rail is so restrictive for the amount of fuel your trying to displace . It literally will have a few lbs of pressure difference at higher boost . Theres a big sticky on the mr2 about using 550s with the stock rail.fwiw

[MR2driver]

On that note, I have a factory fuel rail for sale for $40. You would just need to then get it bored out at a machine shop.

[lofer]

you can have it bored to 7.5 mm I think and thats only a liitle smaller than a wolfkatz 8mm specializer.You can keep the stock look too.

[gotime242]

Im sure you guys have seen the pictures of mine and are sick of it, but ill post them again. lol

My truckmount was less that approx 450 dollars total with fans. The pipes i was able to come up with, so it didnt cost me. I used a ford powerstroke intercooler that was $150 off ebay. You can find nice cores (more flow than ford one) on ebay for a little more though. Two 13" tripac puller fans were a little over 100....and the silicon couplers anf t-bolt clamps ($$) all came to around 100.

I like the setup, it certainly is unique. I know that it could flow more, i know there are other options. But i really dont care. People allways try to tell me "you should of done this, or that" but whatever, i like it, it was cheap and easy. Im only going for a little over 300rwhp so i wasnt looking to create this perfectly-engineered system. I dont notice the lag at all, and it never gets more than just warm to the touch. Feeling the temp difference in the pipes comming from the turbo/into the intercooler, and the one comming out is amazing.

http://img177.imageshack.us/img177/7937/17ib.jpg

http://img177.imageshack.us/img177/1155/ic14bk.jpg

[gotime242]

Oh, and i just have 4 major bends (in the pipe). :D

[lofer]

werd. I like it-looks great. The one camp looks like a bottle neck though. Seriously glad you decided to keep it its a nice setup.

[gotime242]

werd. I like it-looks great. The one camp looks like a bottle neck though. Seriously glad you decided to keep it its a nice setup.

A clamp? Where do you mean? If you mean where there blue and red couplers are next to each other, that actually retains the int. diameter. It goes from 2", which uses the oem turbo->intercooler pipe, to that blue 2"coupler, where there is a pipe inside (cant see it) which the red 2"->2.5" coupler attaches too. I made sure it never got smaller anywhere as it went along.

thanks!

[Orion ZyGarian]

That looks incredibly cool! Great job

[Love Doctor]

Wow!

Peace-