So I've been searching on here and the net for the past couple of days, I have two questions really...I have a 97 civic with a y8 in it...from the research I've done, I eventually want to boost but I've read that the y8 oil pump sucks ***..so my question is at the moment versus porting and shimming my current pump since I plan on building a completely other y8 from scratch what oil filter/oil combination is the best to run for my peace of mind currently ...I drive the car hard often..I was thinking synthetic 10w 30 but I'm not sure if that vicosity is too much, since the recommended is 5 w 30? Also a filter which flows better to compensate for the pump lacking to do so, I'm not currently boosted but I guess you can say it's just a preventative step I'm seeking to make lol....any advice would be helpful..thanks.

 

Put this in the FORCED INDUCTION forum. Not the ALL MOTOR forum. We don't play with snails or single cams (for the most part) in this neck of the woods

 

But the car is all motor though?...it's not boosted...I don't think the car is necessarily a snail..pretty quick imo...but even though it's a naturally aspirated sohc I have to place this in a turbo forum? Jw, thanks.

 

My bad, I guess I read your post incorrectly. Thought you said you wanted to boost it.

And snail is a term for turbo, wasn't referring to your car my friend.

From what I know shimming and porting the y8 pump is the best way to go.

Oil weight is determined mostly be engine clearances. Since it is a stock motor, I would run stock recommended weight and a nice wix or K&N filter.

 

I don't want to boost this motor, that's a whole other motor ilk swap in over time possibly..the motor has a stage one Camshaft I believe.. so it's not stock, z6 intake mani and h22 injectors which my y8 injectors should be here soon,it doesn't really run rich, not majorly atleast...plan on getting it tuned after the injectors come in, but pulling the oil pump seems like a hassle for a motor I eventually will pull out...so I was seeking alternatives.

 

Mobil 1 Syn 5w-30, Honda filter

 

Alright though I think I'm going to run the pcx s2k filter.

 

Go to Honda. Tell them you need an oil change. It's really that simple.

 

I know it is but I can change my oil, but there's a few variables that factor in to my question to oil flow and oil vicosity. The larger in jesters could dilute the oil, the cam, the larger injectors Anand the butt oil pump. You have to compensate. I do most my work myself, so getting the oil changed is my task.

 

The car came with larger injectors, it's my daily so I can't afford to let it sit...my new injectors won't be in for another week, so that's why I asked what vicosity would be better since the larger injectors would dilute the oil, which also brings to me asking about the oil filter which flows best to make sure there is in an increase in psi. Which gives me a little peace of mind...so I chose to use the pcx filter, but as far as oil idk what would be too high, I was thinking 10w 30 or 40.

 

I also do have a non stock cam, what brand has yet to be determined, I just know it's a stage 1 or 2.

 

Ok let me clarify, my car is NOT stock lol y8, z6 intake, si tranny, cam,h22 injectors, 2 inch full exhaust to a magna flow muffler...I should've stated this in original post my bad guys.

 

So to compensate for the larger injectors for another week, what vicosity oil will allow the car to remain lubricated properly...

 

You're going to change your oil to compensate for 80cc bigger injectors for a week until new injectors come in?

How do you know you have a bigger cam?

Why not take off the valve cover and look at your cam and figure out what you have?

 

Tbh I didn't even know I could tell that way, I thought I'd have to remove the valve cover and head and I'd hate to throw my timing off since I can't set it back it be my first try and being off on a non clearance motor and bent valves is not what I want lol also stock is cc is 240 I think and h22 are 390 right? And yes I would try to compensate, anything can happen in a week lol I had a cammed sentra, there's no way the cam on this car is stock...I have an idea what it may be but until I know for sure I will not mention it...it could not have one but I'm about 70 percent sure it does...

 

Just leave your oil as is.

You don't even know what you have yet.

Figure out all of what has been done to your engine and then go from there.

 

I've had a sohc 94 accord vtec, no sohc sounds this damn angry..this wasn't meant to become my daily but life happened so I wasn't able to jump in and do what I had planned to see what all was done and wasnt.

 

Either way I appreciate the advice guys...I think I found a solution.

 

Bearing clearences and oil pressure are the only things that dictate oil viscocity. 5w-30 and 10w-30 are the exact same viscocity at operating temp. The only difference is the cold cranking viscocity.

If you dont have adequate oil pressure with 30wtlt oil, step up to 40wt. Switching from 5w-30 to 10w-30 will make zero differencr to you operating temp pressure

 

Bump* I appreciate the information and break down. Can I ask what the "wt" and "wtlt" stand for? Also do you think synthetic is the way to go...idk if the motor was previously ran on it or not.

 

the Honda pcx filter raises oil pressure and is made by filtertech so its always a good filter (the Honda plm filters come from 3 different manufacturers for Honda 1 being Honeywell aka "fram" which aren't great).
everything you will probably ever want to know about oil is in this link including the rankings of how well different oils protect.
https://540ratblog.wordpress.com/201...-test-ranking/

a huge thing is with those big injectors is that if they are flowing so much that fuel is flowing past the rings then then youre washing the oil off the cylinder walls so theres little to no lubrication there even with fresh oil, not even having to dilute it 1st.

 

Thanks for the information and link brother, but how would I know if they are flowing that much?..I'm not even sure which h22 injectors the are tbh..I'm assumed the largest stock ones...worse case scenario type of deal...my safest bet is to just get rid of them, I spoke to my brother in law he told me the same thing that the oil vicosity might not be any help because they injectors so large...he said I should drive the car at higher rpms at times to try and burn as much of the fuel off as I can as well. I read good things about the pcx, but also some saying it did increase oil psi...but ima use the filter regardless and go to it.

 

It doesn't increase pressure, it just doesn't have as large of a drop as the smaller ones due to a bit better flow. The oil pump is the only thing doing positive work on the system and is the only thing that can actually "increase psi"

I think you're overthinking this majorly. Go to the junkyard and get a set of the correct injectors until you have a means of recalibrating. The Prelude injectors are a shade over 10% larger than the stock ones (depending on exactly which ones they are), so you're likely not flowing enough to wash out the walls. Also, if everything else is actually working as it should, you're probably in a range where the ecu can actually still trim out enough to compensate for them under normal driving conditions (but not at WOT).

 

I tend to do that, this car was meant for a build but then life jumped up so I needed to make a decision to daily it...so the engine is a y8 vtec motor, but vtec is full disengaged due to the aftermarket cam, the ecu it's running on is a p75.....non vtecu..the intake manifold is z6 with z6 fuel rails, now since the z6 is obd1 and has a map sensor he hacked the harness to get the map sensor wired in as well as the h22 injectors...the engine harness is obd1 because I can only spot one harness to the distrubutor, I may be wrong..I can tell what year the injectors are from, I just know they are brown, don't know if the tips are blue or not...for the car being a bit of a science project already outside of my original intentions for it, this is why I'm over thinking it lol..I've done a lot of work on my own cars but I've only been on the car scene two years...so I'm kinda newbish..I've understand the oil pump situation now and the filter, thanks for taking time to give me the knowledge truly. But for the fact the ecu I'm using isn't meant for my vehicle would it learning the fuel trim be different in this scenario? Also if I pull out these injectors would they( z6 injectors since the are obd1, not sure if that matters I assumed since ecu was why not) snap into the female end on the harness? If I don't have to go in and change the female end I can tackle the rest I believe at one point, I'm doing my research right now and you guys are definitely helping alot , thanks.