Best compact 4 Zylinder engine?

[Silvia_Drift]

The SR20DET, CA18DET or EJ25.

[chaos]

5) I dont think in Daimler Chrysler they had a good inhouse solution thats why they resorted to fusing 2 engines!

why is that?
its aperfectly acceptable solution to use the heads an pistons etc of a good engine to make a larger V version.
In effect this is what was doen to make the Mclaren V12 for the F1 for example, yes there are more changes but the basic design is that of 2 x M3 sixes in a V.


On other engines there are some good ones mentioned, but have you considered the engine from a wrecked e30 M3, Integra Type R or CRX VTEC.
If u want to go the turbo route the CA18DET from an s13 200sx wouldnt be a bad choice.

[s13sr20det]

RWD
S13 SR20DET 205hp/203tq
S14 SR20DET 220hp/203tq
S15 SR20DET 250hp/203tq 6 spd

Available in FWD also

Seen these things in everything from 300zx to BMW

[danroz]

Ill build you a list to re-cap, maybe you should build a poll

1.SR20DET- Very good turbo motor but even though its all aluminum I still think its too heavy
2.4G63- The reliable motor for DSMs everywhere but a lot of boost and you have crankwalk issues
3.B18C- I leave this open cus you either get the GSR version or the Type r which makes 200hp...either case its made for light cars, high revs, and loads of fun without the torque
4.4AGE- Very cheap and easy to find and good if you want to just mess around but it does get expensive some people say... turbo versions are nice
5.F22A (S2K Engine)- Very expensive since its just out on the market but its the best NA 4 banger out there
6.3SGTE- This thing is a beast. As far as I know there hasnt been any issues with it and they are freakin awesome, might have weight issues though
7.RB20DET- Why no one mentioned these I dont know... The straight 6 turbo in the smallest package, you could stroke it out but once again weight is an issue, power won't be
8.2ZZ- 1.8L 190hp and its all alluminum, there is a torque issue when the system switches to the vvti cam (40 lbs tq loss :shock: ) but they are reliable and fun like the b18's

My personal choice would probably be the b18c5 (type r) for the application your doing. They rev like crazy and if money isnt an issue there have been cases of 260 naturally aspirated horses @ 11k rpm...turbo versions up to 560hp (its scary to think that but there are rare cases)

Am I missing anything?

[Atlas]

Maybe look at a rotary?? If you're looking at weight case in point - RX8. Everyone knows the tuning potential of rotaries =)

[danroz]

Originally Posted by Atlas Maybe look at a rotary?? If you're looking at weight case in point - RX8. Everyone knows the tuning potential of rotaries =)

Rotaries break down too often

[black_magician]

I'd go with honda's B18C1 (1.8L), it's great for forced induction, and you can get about 450HP out of it, if you tune it right. But I'm usually partial to Honda

[black_magician]

and since its a honda, it'll run forever

[findleybeast]

in support of the rotary suggestion - not only weight but size as well. since you're trying to fit the engine into a smart, the fact that rotaries are smaller than nearly any 4 cyl and will rev like crazy is a big advantage. only drawback is that they're not transversely mounted.

[findleybeast]

also the new renesis engine in the rx8 also doesn't have as many of the reliability problems that plagued the older rx7 rotaries

one a side note, if you're not totally set on the smart roadster, you may want to look into the Attack by K1 Styling. it's an easy to assemble kit car and it has a really big engine bay and is inexpensive. since this is a project with your buddies, it may be fun to build the car completely from the ground up.

http://www.k1-styling.sk/

[danroz]

Originally Posted by findleybeast also the new renesis engine in the rx8 also doesn't have as many of the reliability problems that plagued the older rx7 rotaries

Ummm Mazda had a big recall on the Renesis engine as soon as it came out of the factory...They were not makin the power that was claimed (I think thats the basis of a recall

[oldsnail]

toyota
1.6L 4age 20V 170hp
1.6L 4agze 145hp
2.0L BEAMS 3sge 200-215hp
1.8L 2zzge 180-200hp
2.0L 3sgte 200-265hp

honda
i like b18's coz more of them are DOHC

[findleybeast]

Ummm Mazda had a big recall on the Renesis engine as soon as it came out of the factory...They were not makin the power that was claimed (I think thats the basis of a recall

good point, though i was thinking more in terms of apex seal degradation and the like.

[M-pulse]

CA18-DET weight 126kg

SR20-DET weights 148kg

CA18-DET's have nice features for how old they are, and everything inside them is forged, but they lack a decent head gasket.

Upgrade the head gasket and throw all the other usual mods onto them and they can rev to 8k all day.

But they dont make the impressive torque figures of the SR20 alas. But still a rock solid engine

they are cast iron yes, but main advantage that have forged pistons, conrods and crank. Tough block 2nd to the FJ20-ET

[M-pulse]

6A12G 1998cc quad-cam 24 valve mivec 205 hp
4E-FTE 1331cc dohc about 140hp