Jump to content
SAU Community

Recommended Posts

gday just trying to find out how scarce the turbo conversion stuff is for the l24?? and also what are the compression ratio's of the l20et, l24e and l28et? any help in finding these parts would be great new or old not looking to purchase just yet, just getting an idea before i buy the project.

cheers paul :laugh:

Edited by paulmac

find most of that stuff on ebaymotors.com. got my mani for bout $180ish aus i think. also try ozdat.com and 910bluebird.com. some other Zed sites around as well

r30 l24e comp is around the 8.5-8.6:1 pending on the head (e88 lower then n47) which is turbo country. l20ets run fair low comp tho, no idea on the 28's...

L24E MR30 up to '83 was 8.5:1 compression, '84/85 was 9.0:1, L20ET was 7.8:1 and same for L28ET.

Just remember, the higher the static compression, the lower the boost that can be used safely. And stay under a bar and you have better reliability. Factory L20ET boost was about 6psi whilst factory L28 was about 8psi.

BNR32 GTR's had a static compression of 9.0:1.

As for the availability of the required turbo bits goes, they are getting very thin on the ground. Ebay, Ozdat and maybe TradeMe in NZ, might be good, but freight from o/seas is the killer. For an L24ET set up, the stock RB25DET T03 turbo would be the go, or the more antiquated VL Turbo compressor. The exhaust manifold is the same wether L20 or L28ET, Inlet manifolds can be the problem though as there are a few to choose from, depending on your application. For the most part, the L20ET bits would be best for an L24ET in my opinion and the cheapest way to give the rex's a bit of hurry up at a quarter or less of the price.

cheers fellers that helped alot

yeah as you said ghost rider the higher the static compression the lower the boost thats why i was just trying to figure out what was what because i wouldnt mind about 12psi if i do buy this car i will definately be spending a bit of money on it i found a love for the r30 when i bought my first one so i may aswell spend a bit on one now i got more cash flow

cheers heaps again boys

the heads are definitly alot different between th E88 & the N47.

one thing to note is the exhaust flow on a N47 is pretty good as there are these cast in exhaust port liners, with in one part give the gas a high exit velocity, plus the glow red once heated up and burn un used fuel (for emissions etc)

The N47 also has a high quench designed chamber, so is good in N/A format, but over 14 psi it would compress the mixture into one small area and ignite prematurely...... PING!

The manifolds are one of the rarest things, the L20et even rarer

I suggest getting in contact with 'idolizar' on the R31forum, he is selling his flogged out HR30 (L20et) for a grand...

mabey offer him some cash for the engine components...

It wouldnt cost too much to make a custom log style manifold either.... all 6 ports into one log, flange slapped on the side

i also know of an old man in the hills with a complete conversion kit (manifolds, injectors, cooler, turbo, afm, dissy, ECU, loom EVERYTHING) he said he wouldnt part with it for less than $800

wow thats fair cheap $800 i seen a comlete setup for $400 on ebay a while back i was gonna buy for my first r30 but fundage was sour to me at that time, how long would you think this old feller is going to hold on to these parts? and are you interested in them?? don't wanna cut ya lunch or something

Paul.

whats the difference with the inlet manis? cos sused out afew l28e's at wreckers and their the same as the l24. same tb and runner length. if anything the l20 would b smaller, but pretty sure all same cos exhaust mani is. my stock manifold and mates is working fine as well. i just pissed off all the idle and emissions stuff. looks lot better and runs all gd :cool:

Edited by OUTATIME

intake manifolds are different on all of them , even the L28 and L24

the L20et intake mani has smaller longer runners to increase intake charge velocity, so is very good for torque,(on a 2 liter anyways!)

The L28 is bigger on most models, but they changed it a few times....

THe L24 is in the middle, good balance of torque and higher RPM power... I will be useing my stock L24 intake for starters, then change to L20et later on to see if there is much difference.

the turbos that i have available to use are a VG30, not too sure if its stock as it looks like a RB20 compressor cover. the other is a high flowed VL turbo unit (still to take delivery)

Both of these will be boosting around 3000rpm and above, so my intake manifold should be ok for off-boost driving.

Old man in the hills may be going to a dementia ward soon, so im not too sure how long it will be before the grandkids attempt to clean out his shed!

and not to worry as i have enough conversion parts to last me quite a few years.... just gotta save some cash to et the hatch regoed then i can bolt on all the goodies!

I have a L20et head, block, crank and a few other bits in the carport ready for the scrap metal yard.... so if anyones keen let me know!

intake manifolds are different on all of them , even the L28 and L24

the L20et intake mani has smaller longer runners to increase intake charge velocity, so is very good for torque,(on a 2 liter anyways!)

The L28 is bigger on most models, but they changed it a few times....

THe L24 is in the middle, good balance of torque and higher RPM power... I will be useing my stock L24 intake for starters, then change to L20et later on to see if there is much difference.

the turbos that i have available to use are a VG30, not too sure if its stock as it looks like a RB20 compressor cover. the other is a high flowed VL turbo unit (still to take delivery)

Both of these will be boosting around 3000rpm and above, so my intake manifold should be ok for off-boost driving.

Old man in the hills may be going to a dementia ward soon, so im not too sure how long it will be before the grandkids attempt to clean out his shed!

and not to worry as i have enough conversion parts to last me quite a few years.... just gotta save some cash to et the hatch regoed then i can bolt on all the goodies!

I have a L20et head, block, crank and a few other bits in the carport ready for the scrap metal yard.... so if anyones keen let me know!

I need a turbo cam, what's the difference between a L20Et and a L28et cam ?

do you know what's stamped on the end of the cam (back end)

Nigel

there is a little difference between the cams, a L28et cam is better than a L20et cam

but the L20et is better than any stock n/a cam

there are some cam specs available for the L20et, but they are basically top secret as they cost alot of money to get.

i was thinking of useing the L20et cam in my N47 headed L24, but i think i will see if theres any difference before i sell it...

but hey if the price is right!

there is a little difference between the cams, a L28et cam is better than a L20et cam

but the L20et is better than any stock n/a cam

there are some cam specs available for the L20et, but they are basically top secret as they cost alot of money to get.

i was thinking of useing the L20et cam in my N47 headed L24, but i think i will see if theres any difference before i sell it...

but hey if the price is right!

Wrong!.

L28E cam and a l26 cam is a vast improvement to use on a l20et... Check with dennis he has the specs now on the l20et cam.

L26 (260z) NISMO cam (has 2 have "c" stamped on it) would b the best factory cam. more aggressive cams can obviously b bought from crow cams etc.

so l28e cam would b a slight upgrade for l24e(t) cam? worth it...?

L26 (260z) NISMO cam (has 2 have "c" stamped on it) would b the best factory cam. more aggressive cams can obviously b bought from crow cams etc.

so l28e cam would b a slight upgrade for l24e(t) cam? worth it...?

yes correct l26 cam, isnt a nismo cam.. Still a factory cam. Either way isnt best suited for a l20et or any turbo aplication due to it having a large amount of overlap. It will blead off to much pressure.

There are factory released l24et's beleive it or not. Listed on nissan's database. No one knows the specs of those cams, If what you are talking about is using the l28e cam inplace of a factory l24 cam. From what i understand the l24 uses external oil rail for the cam, compared to the l28e cam using a internal feed. you can correct this buy swapping the cam towers from a l28.

I got a turbo manifold coming from japan if anyones interested...

Also still got a hr30 turbo sump , inlet manifold and found out that i kept the l20et afm :laugh: Sorry tot he people i said i didn't have one too ages back.

Also Denis... found that door trim. Got no idea how you can get it tho because its too big for post.

Cheers,

Waz.

im going up to sydney later this year when my R30 is finished so i can drop off the door trim then...

as for cams... im way confused now! will just get a custom....

and does anyone know what a 'F' stamped cam is?

im going up to sydney later this year when my R30 is finished so i can drop off the door trim then...

as for cams... im way confused now! will just get a custom....

and does anyone know what a 'F' stamped cam is?

This says its from a L28e, using a P97(?) Head

http://www.atlanticz.ca/zclub/techtips/cam/index.htm

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I understand your sarcastic exasperation. But to be fair - the baffles do indeed fit OEM cam covers. They did omit to say that you need to do a bunch of stuff. But they do fit them.
    • Got started on the modification to make these splash plates fit over the long weekend. First the surprisingly time consuming task of swapping all the cam cap bolts to Tomei cam cap studs. I did the method of removing one bolt at a time, applying loctite to the stud, double nutting to torque as the manual described. Then carefully unlocking the nuts without disrupting the torque of the stud (and going back to re-torque a few times when it slipped). Finally applying the nut and torquing to spec. Repeat x28 Next up I went about removing the stock cam cover baffle so I could ensure it was fully clean after drilling for stud clearance.  As the blind rivets holding the baffle on were domed I used a punch to mark the center then used 4mm drill bit to carefully drill out the rivet without going too far part the baffle. As seen in other thread here is what is inside the stock baffles I decided on M4x6mm bolts to bolt the baffle plate back on with. I used a 3.3mm drill bit with some tape to mark the depth at ~8mm. Next was to tap the threads using a cheap bunnings kit M4x0.7. With the baffle removed I also drilled out the spot welds holding in the baffle plate oil returns. Unsure whether this was the best option or if I should have cut holes in the Hypertune splash plates to allow the oil drains to still function... time will tell. I then removed the the Hypertune splash plates so I could rest the cam cover on top and use a dab of grease to mark where the studs impacted the oem cam cover baffle. The most obvious spot was on the hump from the stock mesh is held. Using this hole as an anchor I bolted the oem baffle plate back into the cam cover and lined up the Hypertune splash plate. Marked the rest of the holes for the studs and drill those out too. Total 32 holes drilled and 12 threads tapped on the passenger side cam cover alone for this bolt on part that totally clears all OEM cam covers.. Drivers side next as well as some E85 safe fuel foam to fill the space behind the behind cam cover baffle plates. oh and some lock nuts for the splash plates of course.
    • I had the same previously, and it really shits me. They just run off red book averages or whatever as the maximum insured, there are never good quality cars available to buy for anywhere near those prices. I don't even understand why they do it. Sure having a customer overinsure then false claim is a risk, but how often does that really happen in the world, 1%? 0.1%? On the other hand, all 10-20% above redbook listed prices and charge 10-20% higher premium, surely that is more profitable for those cockroaches
    • My take on gg2 48mm, 54mm, 58mm, and 62mm compressor map for same size compressor vs gg1 : All gg2 only outflow gg1 above 20 psi. As all g gen 2 surge line at lower left of comp map move to the right, all gg2 sacrifice spool vs same size gg1, surge line move to the right worst for 54mm gg2. So for same size compressor if you want best response, use gg1, if you want max hp at >20psi use gg2 but you will be laggier vs same size gg1. Max compressor efficiency drops to max 75% on all gg2 vs max 76%-80% of same size gg1. Iirc lower efficiency means hotter iat less dense air so lower hp at same operating point of comp map. Also curious why gg2 is mapped to lower max rpm vs same size gg1 (only 48mm size both gg1 gg2 mapped to same rpm) : 54mm gg1 165,000 rpm  vs  gg2 160,000 rpm. 58mm gg1 150,000 rpm vs gg2 140,000rpm. 62mm gg1 145,000 rpm vs gg2 140,000 rpm. If gg2 can safely spin to gg1 rpm then they can flow a bit more than as mapped. Good thing that all gg 2 interchange compressor and turbine housings with same size gg 1. So gg1 owners can buy gg2 chra only if planning to boost >20psi.
    • My stuff is all with Shannon's, granted, I don't really have imports I'm driving on the road, however, I've had multiple cars at the same time with them. Presently we have the Landcruiser on laid up cover, Sarah's Kluger on full cover, and the house insured. About 18 months ago Sarah wrote her Subaru Liberty GTB off, insured with Shannon's, and the payout, and buy back of the wreck was super quick. In 2020 we had the VF Commodore totalled in a major hailstorm. Storm was on the Saturday, I called on the Sunday and lodged it, vehicle was towed on Tuesday night, assessment team called on Wednesday to say it was a total loss and get payout details, money was in the bank on Thursday morning. Have had a few other claims both at fault, and not at fault, over the years, and never had an issue with them.   Funnily enough, they're also the cheapest insurer I find for things like Sarah's Kluger.   I will say I'm less impressed dealing with them lately around "the experience", as a lot of their staff that you deal with aren't car enthusiasts. Shannon's has a much more main stream feel ever since they decided to become "big corporate", laid a heap of staff off, and then hired a bunch of non enthusiasts. At the same time they've been making a push to be less "call us and we'll personally have someone who cares help" to "hey, this computer can do stuff for you" and are trying to get more square pegs to fit round holes. (That's just the vibe I get from them). Again, have had no issues with claims with them, but get a bit of a "less personal" feel from them.
×
×
  • Create New...