Hey Jake what do you have for us on the MPG engine Options

[LarryR]

I would really like to know what you have for 914 in the way of a hi mpg, respectable performance package.

I figure the 914 should be able to kick out 40+ mpg and get a 0 - 60 time in under 7 seconds.

The new tdi jetta coming available in July will go 0 - 60 in 6.9 seconds and get 41 mpg in the city and 53 on the highway. However id does weigh 3300 pounds. I figure the 914 should be able to smoke that with the 1300 pound weight advantage.

I am really looking forward to seeing what you have come up with Jake.

trying not to hi jack the emissions thread but keep it on 914 world (IMG:style_emoticons/default/beerchug.gif)

BTW you said you need 10 or 12 additional people. I would be # 2 ... I would gladly buy a super efficient 914 engine as opposed to buying a tdi jetta. (IMG:style_emoticons/default/beer.gif)

[toon1]

Would there be any benifits to putting a 78mm stroke setup (crank, rods,pistons w/ the right pin height) on a stock 1.7?

Will the 9550 cam support a 78mm stroke 1.7? (IMG:style_emoticons/default/idea.gif)

here's the combo I am thinking of:

90mm pistons
78mm stroke
10:1 compresstion w/ flat top pistons
.040 D/H
stock 1.7 heads

piston dwell at tdc and bdc would effectively be longer, the smaller bore would give less dead space at piston crown to ringland, should be less likely to detonate, but small bore would shroud valves and restrict port flow.

trust jake, i'm shure he could come up with a combo that could push 40-45 mpg @ 120hp but would you pay $20k for all the coatings and one off stuff to make it happen?

This combo is close to the super 2L. The purpose of having the small bore and long stroke w/ small valves is to increase port velocity. with the right cam, it's possible to continue an intake air charge even AFTER the piston is on it's way back up. This creates great mixture properties.

NO, I would not/ could not(sam I am (IMG:style_emoticons/default/biggrin.gif) ), pay 20k for all the coatings to get 40-45MPG.

What if this combo could consistantly yield 32-35 with the possibility of 40!?

I have a two cyl. engine right now that is this excact combo

90mm bore
78mm stroke
8.2:1 comp.
3600rpm redline

it swings a 13" surface drive prop. and pushes a boat around through the mud and weeds. I lives it's life to to create huge amounts of low end torque @ low rpm's ( and does a good job of it).



If it had 2 more cyl's. (ala a T4) it would be a great motor (IMG:style_emoticons/default/idea.gif)