86.5 VG30i

[halfyearD21]

hey mtcookson just wondering what sort of bad stuff you heard about Paeco. That would really suck if the only people who make a stroker kit, in a reasonable price range, was a horrible company that sold junk. If it is something like "they dont balance cranks" that is fine because only an idiot would trust a company to "balance" a crank. I know this from lots of experience with other companies, they claim they balanced the crank but they do not even know the rods or pistons you plan to run. Therefore making it impossible to truly balance.

I could see many backyard mechanics just slapping this stuff in because someone said it was ok. but at the shop i worked at we checked everything that came in, "balanced" or not. And most of the time the "balance" job was horribly off. If it is anything other than that i will definitely reconsider the stroker.

[mtcookson]

Here's one of the reviews I can remember... note this post was 5 years ago so things may have changed since then.

This was posted by a guy on a different Maxima forum I used to be on.

Quote »well as some of you might know.. i am rebuilding my engine in my 91 se max. and i got most of my parts from Paeco industries. i have read many threads involving people wishing they could have that and that for there max when the look at paecos catalogy. well i took it the step further and ordered my cams to be done, new pistons & rods, and new inner&outer vavle springs, and retainers. first off i would like to say that it took much too long for everything to get in. second when i got most of the order i brought them to the machine shop that was doing the work to my engine, they said that the retainers not only were wrong but they were made very very very poorly. they were made out of some really crappy aluminum that would have gotten eaten up not too long after i ran the engine. third the "new" inner&outer valve springs were glass beaded. and they were supposed to be ballpeened but they were glasspeened instead. but other than being peened wrong which infact does make a difference the springs are ok. after i found that the retainers were totally wrong and were pieces of **** and the springs that i got were not peened correctly we called them and told them that there were wrong and i wanted my money back. and when we told him that the springs were peened wrong he told me that i didnt know what i was talking about and said thats what it looks like when they are ballpeened. when the guys at the machine shop told me that they werent ballpeened and there were glasspeened. anyway to make this shorter, i sent the retainers and the guides that i was told i needed back, they called the next day to tell me that i couldnt get my money back i would get store credit and i said i might not ever do business with you again.so to sum it all up they dont sell as good of a product as they say they do and also thier customer service isnt great at all. and on top of it all thier prices suck, they over charge for the pistons and rods. the only thing i havent had a problem with that i got from them have been my cams that i sent to them to get growd. so before ordering anything from them if you deside too, check around and look at good companys first and talk to your local performance machine shop or performance shop and tak to them and see if they can find something for cheaper becuase either way from paeco or not to get internals for the 3rd gens its going to be made custom. its not as expensive as you think as long as you talk to people that know what they are doing. well its long and if you have any questions about good or bad companys when it come to internals PM me or email me.[/quote]Do a search though and you'll find quite a few bad responses about them. Here's one I found: http://forums.turbobricks.com/...31224

[halfyearD21]

hey i found out officially that my truck has the LSD. do you know where i can find the clutch repack kits for them?

[mtcookson]

It has a clutch LSD?? That's definitely interesting, I'll have to check that out sometime. You may try http://www.courtesyparts.com, they might have the parts you're looking for.

[halfyearD21]

Thanks but that site does not really have jack for my truck. man i heard about this company TBO that made a carb manifold for the VG30. It was a 6 pack set up with 3 two barrel carbs or something like that. Have you ever heard of this company or know if they may have switched names? I cannot find anything about them online.

[mtcookson]

TBO does sound familiar... here's what I can find on them: http://www.garymolitor.com/300...f.htm

Haven't ever seen a carb manifold though... being that they're a pretty old company that could be why though.

[halfyearD21]

yea i looked around and found that spoiler deal too. i finally found a site where the people said the company was closed, which sucks. The chances of me finding someone who wants to get rid of that manifold, and cheap, are slim to never. So i will probably just use that 510 site for the manifold if i do that.

Do you have any ideas for pistons, maybe higher compression or something? i dont want to have to put super gas in it. i would like to stay as cheap as possible. So just a little boost in compression, cause i was told VGs have low compression already thats why you can turbo stock ones easily, should pick up some good power.

[bimrtech]

Hey man, looks like we are in the same boat.Email me. I can hook you up with some FSM figures/diagrams you are looking for. nasajoeser @ yahoo

Also as far as power goes with the VG30I

I had a healthy (read prievious owner spent major bucks on machine work) vg30 something with a TBI manifold. All I know is the car did not seem down on power compaired to others. Was not outrunning them just kept up with them. These guys SPEND MONEY!!!

Of couse I could not leave it will enough alone. I will put the cat out of the bag here as I am not racing that division anymore. I am now converting it to road course only duty.

I took that engine and installed reground cams and springs in it, and adjusted timing on the dyno.The engine made 144 HP at the wheels. Up from well read privious post. And this was not just at peak, HUGE gains across the RPM range. This was with a fresh VG30, Z heads, cam, springs, headers, stock Z 5 spd, Toyota 4x4 rear to 13 by 10 in good year slicks. 144whp = 169 flywheel hp (EST) (169-(169*.15) 15% loss. I think this TBI intake is really a problem with making good numbers.

Like I said email me as I have been down this road just ahead of you and want to share my findings (read not tell you what to do, thats your call)

[halfyearD21]

So what were you running for compression on that motor? Stock rods and pistons? And i am assuming you are still using the TBI and stock computer set up, is that correct? Because i have been looking at swapping to Carb just because its easier for me, i can tune it farely easy compared to getting a computer tune, TOO MUCH MONEY!

What is the Deal with Z heads? Do they have a smaller CC combustion chamber or anything? Better porting or runners?

What size cams are you running? And from who?

[mtcookson]

As far as pistons the best route would be to go custom (which actually aren't much more than off the shelf parts). BRC is a very popular piston company for the Z31 guys. They should be able to make you a higher compression piston very easily.

Z heads have the same combustion chambers and I think maybe slightly different cams stock. I can't remember for sure but I think the ports may be slightly different than some of the other VG heads. Once you start modifying them there's not a whole lot of difference between them all minus that there are some different oil/water holes between the early A/B block and the W block (4/87+)

[halfyearD21]

hey so what can you tell me about a distributor. I know i will need one with some sort of vacuum or centrifugal advance because of no computer. I was thinking i might be able to build one by using some universal V6 Dist. and ripping off my gear and putting it on the new dist. so the gear pattern will match up. Other than that i really do not know what i can do. I have heard Nissan Motorsports had a distributor to use but they are no longer selling it or something like that. Do you think i can find someone overseas with a VG30S and take their dist?

[bimrtech]

I am currently working on a megasquirt II setup for the dist.I want to run it for ignition advance (coil control) and to ground the injectors on the FI intake from the 02 xterra engine I just bought.

I let you know how all that goes.

I did get the VG33.Was not a 14k mile engine as was promised. Actually, I ran the VIN that was on a tag on the block and it had 45k miles on it back in 06!

Took it apart, block and crank look/measured great, installed the cams and springs in the heads, put new bearings, pistons and rings in the bottom end. I hope to dyno it soon. It currently will have the carb setup on it until I can get the FI stuff together. I want to know just how much this carb is hurting me power wise over the FI setup. I will do before and after dyno runs. I keep yo posted.

Joe

[halfyearD21]

do you have any idea what voltage the Crank Angle Sensor on an 86 VG30i motor sends out as the trigger voltage. i am swapping to carb and i was looking at using an MSD 6 controller and Blaster SS coil, but i need some sort of trigger for the controller. So if my CAS sends a voltage signal within the accepted range of the MSD controller than i can "theoretically" hook my distributor directly up to the controller.

[mtcookson]

If its the same as other VG30 distributors, which I'm sure it is, it will be a 5 volt signal. There are two 5 volt signals, one for 1° signals and 120° signals, which is the one you need for the MSD.

[halfyearD21]

well i talked to an MSD tech and he said the controller is looking for a voltage between 2-3 volts as a trigger. And he also proceeded to tell me that the 5v signal would be too weak to trigger it. So i think i am going to have to make a circuit to trick the box into thinking that i have points, which is actually kinda simple. So i just need to find some little electrical parts now.

[bimrtech]

are you making a pull up circuit?

[halfyearD21]

i dont know if its a "pull up" circuit persay. But i plan to trick the box into thinking something else. I do not want to get into too many details because if i can actually do this i may be interested in selling/patent if there is a reasonable market, which i think there may be.