5efte

[chinesemafia]

hey guys im going 5efte here the deal i was woundering would it be possible to use 5efe pistons and double the head gasket to lower the compresion ratio
with 4efte loom and ECU

BTW 4efte pistons 5efhe rods are out of the question i really wanna try this and would like some feed back

thanks guys

 

[-Harry-]

Yes you can and to be honest the difference wont be too big. Dont think using std 8.2:1 4efte pistons in a 5e will keep it 8.2:1. It will go up over a point going into a 5e. I cant rememeber what std 5e pistons are but I think their somewhere in the mid 9's. My CR was up around 9.2-9.5:1 which gave good response but always held back huge power.

You also have the option of machining the 5e pistons back to lower the compression. The jamaican guys have done this for years with good success. With the headgasket I wouldnt go more than 2mm.

It all comes down to what your using it for and what power you want from it. In the end, piston and rod packages are cheap as these days. Factor in machining costs and its not much more for a set of pistons where you can chose whatever CR you want. You mentioned 5efe pistons but 5efhe rods? Which rods do you have? Id use 5efhe ones as a minimum.

Any questions feel free to PM me.

Cheers

Harry

 

[Nille]

Get better ecu than 4E-FTE then you might have some reliable power

 

[gorganl2000]

hey guys im going 5efte here the deal i was woundering would it be possible to use 5efe pistons and double the head gasket to lower the compresion ratio
with 4efte loom and ECU

yes,,,u can do that.....it has been done in the past and works...HOWEVER your compression will be in the low to mid 9 region...and this is where a proper tune will net u better results and reliability (at least a piggyback ecu with ignition control)

if u plan to run let's say maximum of stock boost (9/10 psi)...u should be OK with stock set up...higher boost will more than likely cause problems

and the 5e rods are not noted for thier boost holding capabilities....but are ok for a mild build----so basically keep the boost low/stock

some 5efe had flat-top pistons...some come with raised/crowns----so the compression will be different on these two set ups

 

[chinesemafia]

thanks guys for the info
i think what ill do now is shave the pistons and double the head gasket

 

[melloscreama05]

hey man... there was a comparison between rods over on tercelonline and visually there seems to be no difference between 1st gen and 2nd gen 5efe rods... 2nd gen rods are much much thinner.. IDK the part numbers but from what the pictures show the 1st gen 5efe rods are one in the same with the 5efhe rods.. 2nd gen 5efe pistons are flat topped so using those in the 1st gen 5efe should make for a pretty decent engine... The guy that posted the comparison has now built a 5efte with that setup I posted running a T28 with no problems so far.. I'll point him to this thread so he can expand maybe..

 

[UncleD]

hey man... there was a comparison between rods over on tercelonline and visually there seems to be no difference between 1st gen and 2nd gen 5efe rods... 2nd gen rods are much

I'm thinking the "no" is a typo.

I've had FHE rods and sat them next to 1st Gen 5efe(distributor type motor) rods, and have found that there is no difference. Folks were telling me to use a digital caliper or weigh them. My understanding was that there was an apparent visual difference in build between the two rods. It would seem that others have confirmed such findings as well.

My first thought is what 5efe do you have? I was just told that only north and south america had the DIS 5efe's that we have.

As far as pistons, you can use the DIS 5efe pistons to lower CR a little. It's not an immensely lower CR but some none the less. That is what I used, with USDM 1st gen 5efe rods(same as FHE IMO).

To me it's safer than tryna double up head gaskets. Unless you are going to have one specially made that will double the size in thickness once done.