would a front mount help?

[earlbrown]

It's not so much the distance the air has to move but the extra cubic inches. All the extra plumbing, tanks, and core has to be pressurized fully before the intake valve sees the boost.

It's still amazes me the amount of people that talk like the SLIC's pull air from the backside of the radiator. The intake scoop is almost on the same plane as the radiator. The both get fresh air. As far as radiant heat off the engine, the timing cover is probably around 150*F and the pulley is around 125*F or so. How how does the condenser core get? (I've never measured one)

 

[TType85]

I can't agree with theory that because it is a smaller turbo the front mount won't make a difference. It makes a huge difference in the air temp. The smaller turbo is going to create more heat at 20 plus psi than the larger turbo will. The larger IC will compensate for the small turbos' heat at high boost. I don't think there is any question about the fact that cooler air is denser air, and denser air makes more power. Just because a bunch of people go fast with a small IC doesn't make the small IC better. They would be quicker and faster with a big front mount. How about the guys we have seen running 10's with a hot air car? I guess that means you can just remove your IC and go out and run 10s so why bother with even a stock location IC. I'm not trying to be a smart ass. I respect the opinions of all you guys. I'm OK with it if you tell me I'm wrong.
Danny

FWIW on my 86 I went from a good quality front mount to a good quality SLIC. Since I run alky I doubt I would see much difference at all between them. With the limited driving around I did with it, on a 90+deg day here my coolant temps never got above 180 with the SLIC vs 190-200 with the FM. I am running a billet 62 turbo which unfortunately is choked with stuff so I can get the smog done on the car.

The FMIC does have some advantages; it's easier to work on the engine and i'm sure it doesn't heat soak as bad. FMIC's also weigh more.

I would love to see back to back comparisons of a good FMIC vs a SLIC when spraying alky.

 

[mgmshar]

The original poster said he had "38 pd" injectors. Does that imply 38 pound per hour injectors, mated to an engine built to move a lot of air?

If that's the case, why is everyone arguing about the IC? He needs bigger injectors first!

???

 

[TType85]

The original poster said he had "38 pd" injectors. Does that imply 38 pound per hour injectors, mated to an engine built to move a lot of air?

If that's the case, why is everyone arguing about the IC? He needs bigger injectors first!

???

I ran blue-tops (36#) to mid-high 11's, I don't think I would push them more than that.

 

[mgmshar]

A TA49 maxed-out is going to push about 50 lbs of air per minute. Multiply by 60, that 3000 lbs per hour. A "safe" air-fuel ratio is 11:1, right? So, he needs 3000 lbs/hour air divided by 11 equals 272 lbs per hour of fuel. 272 lbs per hour divided by 6 injectors equals 45 lbs per hour per injector if he runs them at 100% duty cycle. If he wants to be conservative and max out at 80% duty cycle, that's 45/0.8 = 57 lbs. per hour per injector. Yes, if you jack the fuel pressure up, a little more can be had.

I've run my TA49 at this level (50 lbs per minute), and my 57-lb. per hour injectors ran at about 80% duty cycle. Go figure.

If he ever upgrades his turbo and starts pushing the 60, 70, 80 lbs per minute of air that his freer flowing engine is capable of moving, the 38 lbers won't even be close. The stock IC restricting the airflow is probably saving his engine right now. A freer flowing IC (stock location or FM) is going to allow that TA49 to move its full potential, and he'll be out of injector.

Why not spend $350 for at least 60-lbers and be done with it?

Or did I misinterpret what he meant by "38 pd"???

 

[TType85]

I think your right about the 38# injectors. I could be wrong but I think they replaced the blue tops.


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[earlbrown]

You probably didn't. Many years ago that was a common injector to upgrade to for people that dind't want the 'big 50's'. I noticed those small units too on the first post, but this thread was about putting on a front mount.

Nowadays, any car that has 20 year old stock injectors or any older designs needs to get a modern adjustable chip and some 60/65's and be set for future bolt-ons.

 

[Mike T]

This thread was started in 09 but I would say everyone is still split on the IC location thing. I didn't know which way to go either but after much debate ended up with the RJC 325 front mount. From my experience no down side on the front mount no overheating (live in FL) AC may be a little warm at idle. The real upside is the car has a GTQ 70 and has ran 20 psi many times on 93 octane w/o alky. May be other factors why my combo works but my guess would be 90% FMIC.

 

[getdowngranny]

Everyone has their preferences and their reasons for selecting either type of intercooler. I had a 17 row Mease SLIC and loved it, but decided to go the front mount route because I was tired of destroying the lower scoop of the shroud everytime I hit a decent bump. Also, the intercooler was rubbing on my big ass sway bar making a horrible noise and there was no adjusting it. I went with the GN1 Super Extreme front mount and couldnt be happier.

 

[krom]

With my front mount and the AZ blast furnace temperatures my car would run hotter than with the slic. Since I have converted to E85 the running temperatures are cooler than the slic.

 

[Azrial89]

I have been debating on going to FMIC for quite some time since I lowered my car significantly. Now the scoop of on SLIC is less then a finger width off the ground and is quite annoying when I hit any kind of bump. Not to mention last night I nailed a dead dog in the middle of the road and completely obliterated my scoop. So what FMIC is everyone going with? Out of fear of being criticized, has anyone had any experience with the EBay ones? It's just hard (right now) to justify a $1000 FMIC. I have yet to reach the upgrades to "need" one of these high end FMIC.


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[Razor]

I have been debating on going to FMIC for quite some time since I lowered my car significantly. Now the scoop of on SLIC is less then a finger width off the ground and is quite annoying when I hit any kind of bump. Not to mention last night I nailed a dead dog in the middle of the road and completely obliterated my scoop. So what FMIC is everyone going with? Out of fear of being criticized, has anyone had any experience with the EBay ones? It's just hard (right now) to justify a $1000 FMIC. I have yet to reach the upgrades to "need" one of these high end FMIC.


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Whats wrong with a stocker at your power level? You'll get plenty of ground clearance and they work well. A Dutt neck would be step two..

Just saying...

 

[Azrial89]

With getting plenty of clearance, can I run it without the shroud? I have been under the idea that it is not good to run with out the shroud. With the shroud on, I only half about a half inch of clearance.


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[Azrial89]

With getting plenty of clearance, can I run it without the shroud? I have been under the idea that it is not good to run with out the shroud. With the shroud on, I only half about a half inch of clearance.


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[Grumpy]

I have been debating on going to FMIC for quite some time since I lowered my car significantly. Now the scoop of on SLIC is less then a finger width off the ground and is quite annoying when I hit any kind of bump. Not to mention last night I nailed a dead dog in the middle of the road and completely obliterated my scoop. So what FMIC is everyone going with? Out of fear of being criticized, has anyone had any experience with the EBay ones? It's just hard (right now) to justify a $1000 FMIC. I have yet to reach the upgrades to "need" one of these high end FMIC.


Posted from the TurboBuick.Com mobile app

So the car is now lowered.. You think those front mount pipes are goin to like that to ???

 

[87_we4]

I don't run the shroud on my car because of that reason. That's what Alky is for

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[85turboT]

If anyone is interested I have a stock long neck IC with dutt necks and electric fans off my car for sale, I went to a kenne bell front mount and no longer need the stocker.

 

[Azrial89]

So the car is now lowered.. You think those front mount pipes are goin to like that to ???

I suppose you have got a point there sir... Was not thinking about that and how the piping is needed to be run.


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[toofastforyou]

Have a stock intercooler right now, and was thinking about a front mount,just not sure if its going to make that much different. I have stock block with ported and polished heard with bigger valves, intake is port matched and opened up with doghouse, bigger throttle body, 3- inch down pipe, TA-49 turbo, 160 therostst, 38 pd injectors, stock convertor, roller cam,stock headers. can anyone help me thanks.

Yes! A front mount intercooler will definitely give you a big improvement over the stock one. Back when my car was stock with only a few bolt-on mods, I found that a front-mount intercooler along with a good aftermarket downpipe were the best two "bang-for-the-buck" improvements I've made. That was long ago with a Kenne-Bell ''Big Boy'' unit which was big at the time.. Now I'm running a h-u-g-e Cotton's front mount and I'm sure it's the last one I'll ever have to buy!
Claude.

P.S: Look at my avatar....That's a nice "front mount" isn't it?