ok guys, heres the list of mods, i really need your brainz
i have a d15b7 with a fresh tight block, i/h/e and running 93 octane only, no lower ..
pretty damn suprising but
i want just a little more OUTPUT without much if any DAMAGE. after doing some research, ive decided not to go with vtec for now.. so i want to use a d16a6 si camshaft, adjustable cam sprocket, new timing belt, and fine tune it with an A/F/C, and add an all aluminum radiator that comes with a slim fan, so im thinking keep the original fan but mount the slim on the front, and wire it up seperately or to a thermostat for if the temp exeeds the what the oem fan is capable of. all im thinking that en engine, like a processor, can perform much better and more relaibly if cooled when "overclocked" and since these blocks have to work harder, its like a heavy duty cooling system on an overclocked processor. thing is, i need to know what temp is too low, as to prevent overcooling and losing power. all i want is what i can get out of the b7 manifold. it has a throttle body spacer plate. am i correct to think i need an a/f/c to tune the engine with the si cam? does the stock obd1 dx ecu have a "fuel cut" ? will somehting like an apexi vafc work to piggyback and override that ecu?
also it has rare DSS racing axles, which should hold quite fine for the added power.
im only hoping to find about 130-ish hp, and around 115 tq
**1st mod on the list:
add oil cooling system. im thinking it is important to make sure the oil stays cool, since a modified d15b7 block has to work harder. my 4age powered corolla gt-s has a factory intalled one. seems like it cant hurt..
heres what i want to do:
get the sandwich plate for the civic:
then get the VW dune buggy 8 row oil cooler kit:
get some heavy duty lines, and install to the right of the radiator, b.c the a/c condesner isnt in the way(its gone) .. but, i have a problem... where to run the lines, and since the oil filter is on the back, wouldent they be kind of long?i could run them below but the car is low and id hate for a branch or somehting to accidently catch one of the lines.
2nd mod:
d16a6 camshaft, ugr cam sprocket and apexi vafc. after i slap the si cam in, will it be neccesary to tune the engine with an a/f/c ? or will it run just fine on the stock ecu. since the engine is already nicely tuned even without any real "tuning" just i/h/e, im curious if ill need something to manage it after things change. the cam sprocket is a ugr model:
and the vafc:
3rd mod:
a better radiator
with the slim fan as a front mounted backup unit if thats even necessary.
also, im very curious as to what is the best oil to run.i was looking into lucas synthetic 20w 50 racing oil. curious if anyone has tried lucas for this application, and if 20w 50 is being a little silly.
also, if i switch to 20w 50 synthetic on a block that has been running 5w 30 non syn, would that cause damage or would it be a good move?
so basically, im thinking this is all i have to do for a slight increase in power and a decent way to have real time control over my engine to manage and access that power, and control and set up preset maps that i can dial in or trigger on demand. to say, emulate the semi-sluggish power and engine action of driving an old dual port dx for driving around town on errands/deliveries etc and be able use my transmission normally, then if i need the power, just press the button and the a/f/c then changes from the preset slug map to the preset power map, and the engine runs differently instead of just driving around in 4th and 5th gear to get the similar slug effect.
this should be a good few things i can do to help the longevity of my engine and increase power a little bit. very curious to hear what u guys think. ive noticed that nobody seems to have done the oil cooler for thier d series, none that i can find. i know that if you stand back and look at it, considering that all the components ive mentioned have somehting to do with cooling, more cooling and security in controlling the power, it may seem as if im just a bit paranoid. but my 4age engine has a facory installed oil cooler, so im thinking that if it needs one, then of course my b7 should have one. basically, since my toyota is currently being worked on, im driving around "chasing my ghost" with this EG through all the places i used to exploit on my normal delivery route and the streets around here.. since i installed the new struts and the ebay coilovers that came with the car, im now able to hit those areas with a lot less body roll and much more precise steering. the bumpyness is nowhere near as bad as i thought it was going to be after reading all the posts against ebay coilovers. i plan on using them until i have saved up money for a real set of coilovers with damper control, in which im planning on have replaced the trailing arms with lighter stronger aftermarket ones and installing swaybars on the front and rear, and replacing whatever worn bushings i have to from the damage incurred from the ghetto setup. then i think it will be a nicely set up machine. just with the ebay coilovers and stock somewhat used replaced struts it stix like glue in the spots that used to pitch my corolla and cause me to have to either loose the ass end and drift it, or feather the turn whilst loosing speed from having to slow down for the entry. even with the longer wheelbase, the civic coupe works quite well. my exit speed with the dx transmission is teh suxxors though. i cant pull out of the corners the way i can with the 4age without asking a lot from the 1.5 while having to drop back to second and clutch-in the turn but it doesnt drop me back to where id like to be in the gears. in fact its annoying... ive heard rumors that there is a d series transmission that was used in an old crx that had very close gears, "the closest gear ratio of any crx transmission" is what was said... is that true or just bs ?
also, im assuming if i have the vafc i wont need a stoichiometer, unless it doesnt display/alert fuel conditions.
last but not least, injectors... i dont think ill need too much more fuel for the si cam but im not sure.
a lot of reading but i appreciate anyone with the patience for it. the d series engines have potential and i have faith in them.