42-45 mpg!!!!!!!!!

[mocha907]

Originally Posted by WVU97GS-R

yeah with the 13b-rew they weigh in at around 2800 lbs. so with an lsx motor which is around the weight if not lighter than the 13b-rew, you would have a crazy car.

those LS7s are crazy light you would probably want to try adding a little weight to the rear for traction purposes though. but you would have a nice low 10 second car all motor

[tonyallen]

Originally Posted by WVU97GS-R

f-body's with v8's can pull 30 mpg+ highway because of the low-end power they have and gearing. don't think you'll get 42 mpg because you have a 1.5 in there.

I've never in my life seen an F-body pull 30mpg.. ever.

I'm sure he could achieve 42-45 mpg, my coupe has the d15b8, and it obtains that kind of mileage, the del sol weighs less than a coupe for a number of reasons, mainly.. less glass.

[mocha907]

Originally Posted by tonyallen

I've never in my life seen an F-body pull 30mpg.. ever.

I'm sure he could achieve 42-45 mpg, my coupe has the d15b8, and it obtains that kind of mileage, the del sol weighs less than a coupe for a number of reasons, mainly.. less glass.

highway yeah i have not too hard

[Darkness]

Originally Posted by tonyallen

I've never in my life seen an F-body pull 30mpg.. ever.

I'm sure he could achieve 42-45 mpg, my coupe has the d15b8, and it obtains that kind of mileage, the del sol weighs less than a coupe for a number of reasons, mainly.. less glass.

i have heard of it with the 6spd tranny on the highway. especially with some breather mods and a tune. highway speeds are only like 2k rpms for them. our 4 cyls have to rev at almost 2x's the same rpms at the same highway speeds as them. so their economy with proper gearing would be around the same. the new z06 actually pulls the same if not better highway mpg than an s2k.

the delsol weighs about the same as the coupe within like 20 lbs and the si model is a pig at almost 2600 lbs

[mocha907]

Originally Posted by WVU97GS-R

i have heard of it with the 6spd tranny on the highway. especially with some breather mods and a tune. highway speeds are only like 2k rpms for them. our 4 cyls have to rev at almost 2x's the same rpms at the same highway speeds as them. so their economy with proper gearing would be around the same. the new z06 actually pulls the same if not better highway mpg than an s2k.

the delsol weighs about the same as the coupe within like 20 lbs and the si model is a pig at almost 2600 lbs

2600 lbs is a pig that means my fox is defiantly a fat ass at 3300

[Darkness]

Originally Posted by mocha907

2600 lbs is a pig that means my fox is defiantly a fat ass at 3300

by honda standards anything over 2500 lbs is a pig hehe.

[mocha907]

Originally Posted by WVU97GS-R

by honda standards anything over 2500 lbs is a pig hehe.

by mustang standards my fox is a hot hatch

[tonyallen]

Originally Posted by WVU97GS-R

i have heard of it with the 6spd tranny on the highway. especially with some breather mods and a tune. highway speeds are only like 2k rpms for them. our 4 cyls have to rev at almost 2x's the same rpms at the same highway speeds as them. so their economy with proper gearing would be around the same. the new z06 actually pulls the same if not better highway mpg than an s2k.

the delsol weighs about the same as the coupe within like 20 lbs and the si model is a pig at almost 2600 lbs

The Del Sol S is what i was using for the comparison to my ex coupe.. its more than a hundred pounds difference.. as for the RPMS, revs don't matter for mileage, its throttle input not how high the tach is. like i said, my 45 mpg is at 73-75mph over 3k rpm. So like if you're driving around in 5th gear alot and giving it a helluva lot of throttle, then you're wasting crazy gas!

I still call BS on the f-body achieving 30mpg anywhere but falling off of a cliff in neutral lol. The Z06 gets good mileage, because its light and the block is really light too. BUT the Z06 is real far away from F-Body. The Z06 once again goes back to the throttle input, with the overall weight of the vehicle being so light and the engine producing so much power, the car doesnt have to try as hard to get it up to speed and keep it there.

[Darkness]

Originally Posted by tonyallen

The Del Sol S is what i was using for the comparison to my ex coupe.. its more than a hundred pounds difference.. as for the RPMS, revs don't matter for mileage, its throttle input not how high the tach is. like i said, my 45 mpg is at 73-75mph over 3k rpm. So like if you're driving around in 5th gear alot and giving it a helluva lot of throttle, then you're wasting crazy gas!

I still call BS on the f-body achieving 30mpg anywhere but falling off of a cliff in neutral lol. The Z06 gets good mileage, because its light and the block is really light too. BUT the Z06 is real far away from F-Body. The Z06 once again goes back to the throttle input, with the overall weight of the vehicle being so light and the engine producing so much power, the car doesnt have to try as hard to get it up to speed and keep it there.

ummm are you serious. load at a given rpms in regards to displacement are what regulate mpg. to say revs mean nothing is stupid. only with zero throttle do revs mean nothing. now i know you're smoking it, what do you think long as gears in tranny's are for? and your car has a curb weight of a del sol base model is 2301lbs where are you getting "a hundreds of lbs difference"? you're car is max 2443 lbs? and i seriously doubt you're getting 44-46 mpg at 75 mph. that's a little farfetched. at 55-62 mph maybe but not 75. you're smoking something or you stripped your car, that's def not stock numbers or anywhere near it.

call all the bs you want. it's not hard for an f-body to achieve 30 mpg if you know how to drive a 6 spd model. a few neutral costs and 6 th gear with some breather mods tend to help the mpg out a bit. they already get mpg comparible to an s2k on the highway if not better. the ummm and all recent f-body's have used the lsx block so i fail to see yoru point. not to mention the z06 isn't that light they are 3100 lbs or more depending on the year.

Honda Civic Blog » Honda Car Weight List

[94CIVICSI]

Thanks for reviving this thread guys. Im actually getting ready to swap a D15B8 into a 1980 civic hatchback. My CX could easily get 40+ mpg with the D15and im expecting 45+ when its in the 1980 civic. Who knows, maybe ill get close to 50.

[tonyallen]

Exterior Dimensions & Weight
Civic del Sol S Civic EX Coupe
Automatic (lb.) 2387 2502
Manual (lb.) 2301 2443

Straight off of MSN autos.. and personally I don't think if you believe me getting 45mpg is farfetched, i did the math and I drove the car. Whether you believe i'm full of shit or not is your issue. I have full interior and in fact I have a 10" sub and amp in the truck power everything, no A/C and no Power steering. I never said my car was stock either, i have I/H/E that is all, unless you factor in the C/F hood and the lowered susp which would increase aerodynamics and lose more weight. If you go to MSN autos and lookup the factory mileage on a civic cx hatchback, which is where the motor in my car came from, its 42-46 town/highway. My car is a bit heavier than the hatch.. and has a larger gas tank 11.9 as opposed to the 10 gallon on the bubbles. And being fuel injected throttle input has ALL to do with gas mileage. Think of it logically.. when you push the accelerator down what happens on the intake manifold.. the butterfly valve in the TB opens up according to how far down you press, and the fuel injectors add fuel to compensate for the amount of air going into the motor.

I've seen quite a few F-bodys and GTOs with the lsx blocks hit up in the high twenties with the 6 spd trans. Of course most of the 6 spd trannies are alot like a double overdrive in reguards to rpms. as far as Revs are concerned its a short way of saying revolutions, and your motor turns in more than just neutral. Stop pretending to know everything and pretending to be brilliant with such words as.. "ummmm" Why did you bring the S2k into this, no one ever mentioned it, or the F-bodys for that matter.

I simply posted here to let him know that it would be possible to obtain that kind the kind of mileage he wanted on the interstate.

[Darkness]

Originally Posted by 94CIVICSI

Thanks for reviving this thread guys. Im actually getting ready to swap a D15B8 into a 1980 civic hatchback. My CX could easily get 40+ mpg with the D15and im expecting 45+ when its in the 1980 civic. Who knows, maybe ill get close to 50.

i will make love ot you're supra

[tonyallen]

Originally Posted by 94CIVICSI

Thanks for reviving this thread guys. Im actually getting ready to swap a D15B8 into a 1980 civic hatchback. My CX could easily get 40+ mpg with the D15and im expecting 45+ when its in the 1980 civic. Who knows, maybe ill get close to 50.

Heh that sounds like a grand idea! I like the real early 80s civics, wish I saw more of them out and about. They're good looking cars IMPO. You gonna have a thread on it?

[tonyallen]

Originally Posted by WVU97GS-R

i will make love ot you're supra

I call dibs on sloppy 2nds.. Any mods to the MKIV?

[Darkness]

Originally Posted by tonyallen

Exterior Dimensions & Weight
Civic del Sol S Civic EX Coupe
Automatic (lb.) 2387 2502
Manual (lb.) 2301 2443

Straight off of MSN autos.. and personally I don't think if you believe me getting 45mpg is farfetched, i did the math and I drove the car. Whether you believe i'm full of shit or not is your issue. I have full interior and in fact I have a 10" sub and amp in the truck power everything, no A/C and no Power steering. I never said my car was stock either, i have I/H/E that is all. If you go to MSN autos and lookup the factory mileage on a civic cx hatchback, which is where the motor in my car came from, its 42-46 town/highway. My car is a bit heavier than the hatch.. and has a larger gas tank 11.9 as opposed to the 10 gallon on the bubbles. And being fuel injected throttle input has ALL to do with gas mileage. Think of it logically.. when you push the accelerator down what happens on the intake manifold.. the butterfly valve in the TB opens up according to how far down you press, and the fuel injectors add fuel to compensate for the amount of air going into the motor.

I've seen quite a few F-bodys and GTOs with the lsx blocks hit up in the high twenties with the 6 spd trans. Of course most of the 6 spd trannies are alot like a double overdrive in reguards to rpms. as far as Revs are concerned its a short way of saying revolutions, and your motor turns in more than just neutral. Stop pretending to know everything and pretending to be brilliant with such words as.. "ummmm" Why did you bring the S2k into this, no one ever mentioned it, or the F-bodys for that matter.

I simply posted here to let him know that it would be possible to obtain that kind the kind of mileage he wanted on the interstate.

if you do the math that's less than 150 lb difference in your model comparisoin which you claimed was "hundreds of lbs difference" and because you read the stats of that motor in a lighter chassis. you're telling us that you're pulling the same numbers if not better in a heavier chassis at 75 mph?

2 you should look at it logically. you just proved my point about rpms. they mean a great deal. you just said they add fuel according to the amount of air going into the motor. higher rpms mean more air going into the motor. we call this a contradiction of what you were previously trying to state about rpms meaning nothing. what you said was completely wrong. rpms/load/displacement are what determine mpg. the higher the rpms the higher the air flow the more fuel needed. longer gears are their to keep the "RPMS" down so you get better gas mileage.

3. the s2k and f-body were brought up as an example of rpms and diplacement. i'm sure he can pull 45mpg....with tuning. but don't expect to swap that motor and pull 45 mpg at 75 mph. there was a big stretch of the truth in alot of your statements.