Ok, so my 76, 2.0L is kind of boring now. It moves a little but still cant keep up with my buddies 1910cc Bug with Dual Carbs. I dont want to go the whole V8 route on it, just add some more torque and get it a little snappier. Any idea's on what I can do with the existing motor? I really dont want to change the fuel injection. Perhaps exhaust? Ideally I would be willing to throw another $2-3k into it.
Signed,
Need More Speed!
backdate the exhaust for sure, other than that not much without spending all your dough with little or return. You could do the higher compression P/C's but the "while your in there's will gobble up your cash quickly (and plus if it is running right, why bother for the litte gain).
You could do a lightened flywheel and it will accelerate a little quicker. Maybe doing something to carve off some weight. I remember someone taking the big bumpers and replacing the steel reinforcments with aluminum for a substantial weight savings.
Last option is screw HP and hotrod your suspension...
QUOTE (Travis Neff @ Feb 18 2005, 03:54 PM) |
backdate the exhaust for sure, other than that not much without spending all your dough with little or return. You could do the higher compression P/C's but the "while your in there's will gobble up your cash quickly (and plus if it is running right, why bother for the litte gain). You could do a lightened flywheel and it will accelerate a little quicker. Maybe doing something to carve off some weight. I remember someone taking the big bumpers and replacing the steel reinforcments with aluminum for a substantial weight savings. Last option is screw HP and hotrod your suspension... |
Sounds like the cheapest alternative it diet time. . .
Get a heat gun and a scraper and pull out 30 lbs. of tar sound mats on the floors. Early bumpers, FG decklids.
Yo surferjoe
That factory fuel injection will hold you way back when it come to HP. Not much to gain with it, still is way cool OK but you won't touch a hopped bug.
You know I have done some chip tunning before, maybe I should look for a junked 914 ecm and maybe play with it HHMmmmmm, converting the ignition points to a hall effct might be a programming nitemare.
I am sure you will get many responses, but if you want my opinion, keep what you got, or get ready for carbs,
Have fun
WBR
Joe
QUOTE (JoeSpark @ Feb 18 2005, 04:04 PM) |
Yo surferjoe That factory fuel injection will hold you way back when it come to HP. Not much to gain with it, still is way cool OK but you won't touch a hopped bug. You know I have done some chip tunning before, maybe I should look for a junked 914 ecm and maybe play with it HHMmmmmm, converting the ignition points to a hall effct might be a programming nitemare. I am sure you will get many responses, but if you want my opinion, keep what you got, or get ready for carbs, Have fun WBR Joe |
As a CA '76, all you can do will have to be within smog-legal parameters. You are significantly constrained by the exhaust system. The best you can do is optimize and tweak slightly.
Take care of the basics first. Make sure all your FI grounds and connectors are clean. Also make sure the wiring harness is good. The signals the sensors send the ECU are based on resistance. If there is extra resistance in the circuits, the ECU will adjust accordingly, but not usually to your advantage.
If you want to tweak the FI, read up on D-jet. There isn't a whole lot that can be done, but there are a few things.
If the engine is tired, a good rebuild will restore a bit of lost power. While it's apart, you could try bumping the compression a bit. A more modern catalytic converter might help a bit too.
Please help unconfuse me, because I'm getting different opinions about desmogging my 75...
First of all, I am smog exempt in WA, so I don't care about passing any tests.
I was concerned about the can of worms I would open by removing the cat to open up the exhaust and let it breath easier and cooler. But I've heard it's no problem, and plugging off the stuff on the intake side is a piece of cake and wouldn't affect the running quality.
Please elaborate on the pros/cons of desmogging a 75/76.
Rand, the big pro is the increase in horsepower. The smog pump, air injection tubes, cat, and heat xchangers all rob power and obstruct engine breathing. The only con I can think of is it won't be completely original, and that ain't a con to me.
QUOTE |
Please elaborate on the pros/cons of desmogging a 75/76 |
Tear all that smog shit off and install a Header !
If you live in Cali, just keep the original parts to put on every 2 years for your smog check.
If you don't have to smog your car, take the restrictive exhaust system off and throw it away. Put on a set of early (73'-74') 2.0L or SSI 2.0L heat exchangers & muffler or just install a header, it's the most bang for your $$$.
Disconnect the smog pump and plug the smog injectors so they don't leak any exhaust.
if you have 2-3k....turbo it!
It's also a lot of work to do every two years. Best to the sell the car and buy a 914-6 with a big six or a 911 if you crave power. Anything you do will cost $$$.
If you want to go faster, learn how to drive faster by autocrossing and getting some track time.
To the original poster--for something near $1500, get a [url="http://www.tangerineracing.com/Super_Header.htm#SUPER HEADER COMPLETE SYSTEM PRICES"]Tangerine Racing Super Header[/url] for a "stock" motor. Swap your stock exhaust back onto the car every other year when you get your smog test.
If you have a smog pump, the belt should "accidentally" come off one day. But make sure to spin the pump (by hand or put the belt back on) about once a month to make sure it doesn't freeze up.
The header is probably the biggest amount of power you'll get out of the car.
You can get a bit more power if you take the heads off and have them shaved a bit to bump the compression up. About 8.5:1 should be doable, even with CA's excuse for "premium"-grade fuel. Costs for this will vary, depending on what else needs to be done to the heads and how much of the work you're doing yourself.
You can probably even swap in 96mm P&Cs for 2056cc displacement without throwing off the D-jet very much. You will probably still be able to pass smog just fine... Umm, probably...
Sadly, just about any power-adding modification you make will make it at least a little more difficult to pass smog.
--DD
if you don't like your car, you should sell it and buy one you do like.
there will -always- be cars faster than yours.
QUOTE |
If you want to go faster, learn how to drive faster by autocrossing and getting some track time. |
QUOTE (RandyLok @ Feb 18 2005, 04:31 PM) |
Please help unconfuse me, because I'm getting different opinions about desmogging my 75... First of all, I am smog exempt in WA, so I don't care about passing any tests. I was concerned about the can of worms I would open by removing the cat to open up the exhaust and let it breath easier and cooler. But I've heard it's no problem, and plugging off the stuff on the intake side is a piece of cake and wouldn't affect the running quality. Please elaborate on the pros/cons of desmogging a 75/76. |
http://www.aircooledtechnology.com/store/product.php?productid=16303&cat=308&page=1
There ya go....
3010 bucks and some change..
Its good for 120 Ponies with a pair of dual carbs-tested and dyno proven...
I agree with Randal. I had a tired 76 with the smog and I used to get some pretty good times autoxing.
I think the best, easyest thing you could do is get a "test pipe" that goes in place of the cat. This will give you a better top end and will preserve that oh so expensive catalitic converter for when you really need it, every other year. Other than that get a pre 75 car and go nuts.
Your car is too clean and original to modify.
It has a lot of value in being original.
George
My desmog intentions are more concerned with engine longevity than power, since I've heard the smog crap makes the 75/76 cars run hotter and shortens the lifespan a bit. Picking up a couple ponies is a nice bonus.
I've seen horror stories on newer cars that had more complex systems, where an ignorant owner tried to clean up the junk and never could get it running quite right again. If all have to do is remove the smog pump & plug the holes, and replace the cat with a piece of exhaust pipe, and the car only runs better... my concerns are alleviated.
The 75 is smog exempt here in WA. I think my autocrossing days are over (love it, but wife doesn't *sigh*). It's not going to cost me anything (a piece of exhaust pipe and a little time... unless I'm missing something). Makes sense to me to go for it.
Thanks for the input gang.
my car is exempt here finally, after 25yrs. I swapped the motor from the smogger to a pre smog 2.0 w/a cam, stainless heatexchanger headers and lightened flywheel. We'll see what itll do w/ an electronic ignition.
randy, if you don't have the coinage for a complete heat exhanger swap contact dan root, he's local. he has/had a nice muffler with a bypass pipe for your year.
k
QUOTE (lapuwali @ Feb 18 2005, 04:15 PM) |
The 914 ECU is all analog. It cannot be "chipped". There's no software to alter. |
The computer case has no chips. it is in a gell type cell... There is no way to change with without buying a new computer system.
Ie you would have to go with a stand alone computer like the Megasquirt.
If you want some more, Get a KNN air filter and some headers and remove the smog belt. But keep in mind everything you do To it you have to take off and put back on.
QUOTE (opera guy @ Feb 19 2005, 12:48 PM) | ||
i have eeprom programers is that what you mean by "analog"? |
QUOTE (ArtechnikA @ Feb 18 2005, 09:01 PM) |
there will -always- be cars faster than yours. |
QUOTE (jim912928 @ Feb 18 2005, 04:48 PM) |
if you have 2-3k....turbo it! |
Hi
Thanx for the info Lapuwali, I see what you mean, much easier to build/buy a system.
Hey Operaguy, what you doin whith that machine, work or hobby ? HHhhmmmmmm....
WBR
Joe
My 76 2.0L car went the 96mm pistons, 8.5to1 comp., heads ported and larger exhaust valves 38mm, backdated to 73 SSI HE's with a Bursch, tuned the Djet on a dyno.
The best dyno runs were 95 Rear wheel hp which is about 110-115hp. Car was pretty quick. I like the Djet as its very simple and can be tuned if you are careful.
Its now coming apart for a major upgrade to a 2.4/4.
Geoff
First, check compression, if it's good,electronic point replacement, K&N air filter,replace & index plugs, loose the big bumpers, low profile tires(messes up speedo) Try it, then if not enough power sell it or buy another car (smog exempt). good luck (new to posting).
dump the smog car get a smog exempt and suby it for 2500 bucks you get 175 hp, or even better get a svx 3.3 or wrx for about 240 hp or so, and it even looks kinda stock
I own a grand ole 72 1.7 live in fla no smog laws. I bought a cool looking header exaust with a short muffler system and could feel the difference and it even sounded better. Im not sure if it helped but I put one of those cone filters on it as well. Better than the oil bath.
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