Help with my plan please

[bleu]

Folks,
I am about to buy my new (to me) car. It is going to be a 2005 Lotus Elise. It has a Toyota Celica GTS engine. (1.8 liters at 11.5:1 C/R)

My first step is to get a no learn ECU and a piggy back ECU (Xede it comes into play later in the plan)

Now, eventually I will supercharge the car but that might not happen for a year. I know of some people that have combined N2O with turbo charged applications to reduce/correct for turbo lag. how about Supercharged applications? You don't get the same lag but i think an N2O setup could help level the torque curve even more if I used a progressive RPM based controller. Thoughts?

That CR combined with S/C and N2O concerns me. I was thinking of porting and polishing my heads to improve flow. maybe there is some room to reduce the CR?


Thanks!

[hammered54]

porting your head's will increase air flow for sure, and cleaning up the combustion chamber will increase it's volume and lower you c/r, also a thicher head gasket will also help, not a big fan of polishing the port's if you plan on driving this on the street, will increase puddling of fuel at lower speed's and cause flooding, not a problem at w.o.t. you should try extrude a hone, it's a mediatype honing that remove's mat.( like valve grinding compond) without polishing and flow's through the port's like air would flow removing only the restricktion's, I'd use good head stud's w/this combo. sound's cool!!!

[bleu]

you should try extrude a hone, it's a mediatype honing that remove's mat.( like valve grinding compond) without polishing and flow's through the port's like air would flow removing only the restricktion's, I'd use good head stud's w/this combo. sound's cool!!!

you kinda lost me. Did you mean extrude-a-hone? what is mat?

thanks for the quick reply!

[bleu]

also, any idea how much a flow bench costs to own?

seems like I might be using one to see if I actually can improve the heads and a few other "restrictions" Throttle body, header, heads

thanks!

[Mustang Boy]

i dont know what kind of internals it will have but i would recommend at a bare minimum of upgrading the forged pistons and depending on the boost forged rods and crank

[hammered54]

mat. that would be short for material,, and yes it was extrude-a-hone, it will remove the "material" with very little effort, don't realy know how much $$$ a flow bench cost, I would think many thousand's of $$$$ good luck

[bleu]

Turns out you can build one for about $500 bucks but I not much of a carpenter nor do I have many carpentry tools. Maybe one of these days i'll build a flow bench. Until then I'll have to rent.

Currently thinking I will have the N2O put plan on running an octane boost and meth injection if I spray with a boosted system.

Goal is to tick by the 1/4 in less than 11 with boost and less than 10.5 with N2O. we'll see. It'll be awhile before it is all done.

[bleu]

I know a guy that is running a 12lb pulley on this engine. Stock engine makes about 160hp to the wheels. He's got about 270 to the wheels now. Well, did. He just tore down his engine because the #1 originally failed a leak down before the S/C and he wanted to see how it was holding up. barely a scratch!! anyway, he is moving on to a 14 lb pulley so he dropped in sleeves, and lower CR pistons, rods, etc. building the bottom end and upgrading the top to match. I am thinking that (since I am willing to build the engine when it blows) I will go with a N2O kit to start. Add the S/C later with an 8 lb pulley then once the tune is solid, i'll go to a 10lb. once I am happy with that, I'll fill my bottles up and dial in a mild shot. the shot will only be used (maximizer II) at the places in the RPM range that there is room. I'll incorporate a meth injection kit with the 10lb pulley.

think I'll make it to 50,000 miles? If I do, then success.

[bleu]

i dont know what kind of internals it will have but i would recommend at a bare minimum of upgrading the forged pistons and depending on the boost forged rods and crank

I will look into the pistons. The 2zz comes with some stout rods and a solid crank so I doubt I'll need to change those. THe 1zz however had pencils for rods.

[bleu]

one more question. with a direct port setup, can you drill into the manifold yourself or do you need to buy a manifold specially built? I have never installed a direct port setup. But I think this is what I will go to if I do add N2O to the S/C set up.

[hammered54]

sure if there's room , and remember there pipe tread's so don't tap it to deep, pratice on some junk first, you only need about 4 turn's on the fogger to seat it, and do not" ever " use locktight on them use the teflon paste only!!!

[bleu]

OK, thanks man. Now, I just gotta get started. in the mean time here's a pic of those rods I was talking about. The thick one is from a 2ZZ (lotus and celica GTS motor) the skinny one is from the 1ZZ motor (that I don't have thank God)

[hammered54]

I'd use the shorter one any way even if they were both as beefie, you would get a better bore to stroke ratio!!! and we all know what that mean's (for those that don't) faster and higher RPM"S which = ? that's right more power, you could also bring the pin down along with the ring pack and have a thicker top ring land, and now you guessed it, SPRAY MORE NO2, now that's what it's all about!!! even for import's

[hammered54]

just thinking, is the block from crappy long rod a taller deck?? and are the crank's interchangable between them?? hummmmmm!!! I'm think'in STROKER!!!! that'd be kind'a cool, with a custom piston you could make quite a bottle rocket!!! ya know just think'n

[bleu]

ha,

I am not sure about the interchange-ability of the two. I have the 2zz which makes more power stock than the 1zz and is the one with the shorter rod all ready. The 2zz has VVTL-i where I think the 1ZZ is just VVT-i. The 1zz stock block will take 275 hp. the 2zz block has a few celica GTS's running 400hp

My car is about 1980lbs with 190 hp (crank) and 175 rwhp. stock. other stock cars (lotus elise) with good drivers are pulling about 13.01s 1/4. Of course the car is made for the track and that is where i'll spend most of my fun time with it. Though I may some day drag it just because my buddy (with the '69 charger I posted about) is into that scene.