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Engine & Drivetrain

Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.

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Os Giken TG24-B1 heads 1 2

July 7, 2004 by badintentionz
20 replies

8.8k views
Hi, I am sort of new to this forum but a couple of weeks ago I came across some nice heads that were produced in the past but were very rare. The pictures are located on this page http://www.datrats.com.au/PICTURES.html . They are for the L28 and turns your use to be SOHC to a new monster DOHC. I have E-mailed Enonvativ Force, an official Os Giken distributor in the states concerning, getting these heads reproduced. Here's there E-mail address Info@EnonvativForce.com. I know I would love to get my hands on a set of these heads and I bet a few others would too. Please support me on getting this idea to Os Giken's main corporation for them to consider this idea. THAN…

Last reply by v12horse, January 30, 2005
mufflers

January 29, 2005 by millerje01
0 replies

1.5k views
Does anyone have any experience with magnaflow mufflers and resonators? It is for a 71 240Z with msa header and stock engine. Any recommendations are appreciated

Last reply by millerje01, January 29, 2005
Are these decent carbs for the money???

January 28, 2005 by Zs-ondabrain
4 replies

1.8k views
I found them on accident and checked them out. They are Dellorto's and that looks like a cannon manifold. What is the best triple setup for the money for my 240 with a soon to be 2.8 (not sure what head to use) 6-into-1 header w/ 2.5'' pipe. stage 2 cam. and should I use an electric fuel pump? forgot to tell ya, they are at $600.00 at the moment

Last reply by Curtis240Z, January 28, 2005
cam tower shims?

January 27, 2005 by zpowerd
2 replies

1.8k views
i've searched and not come up with a part # or where to get them. anyone have the number ready? thanks.

Last reply by Corganx33, January 27, 2005
Heat Shield

January 26, 2005 by keiths71240Z
2 replies

1.5k views
What was the heat shield original coated with? Clear Zinc? Thanks guys.......Keith

Last reply by TomoHawk, January 26, 2005
Volumetric Efficiency

January 26, 2005 by my_mad_z
0 replies

1.6k views
Just wondering if anyone knows where I can find volumetric efficiency figures for the L28? I tried searching on the net and found the figure 70%, but I'm not sure how accurate this value is. I also searched the forums but found no specific specs. Does anyone know where I can get the figures from? Thanks in advance. Marc.

Last reply by my_mad_z, January 26, 2005
afc bolts ???

January 25, 2005 by george71z
0 replies

1.2k views
I'm putting a rebuilt 72 motor in my 71, and have the records that the PO kept on the maintenance. Back in '82, a valve job was done and they replaced the 'afc bolts'. What are they? Can't find reference to this anywhere.

Last reply by george71z, January 25, 2005
Z runs stronger with choke on?

January 24, 2005 by Hallowed
2 replies

1.3k views
Hi. Lately my car feels like its "stuttering" when I disable the choke. This is irregardless of water temp, just feels like the power cuts in and out. Tiny bit of choke and the power is back, but if the watertemp is normal, the car gets a funky, sputtering idle. Anyone familiar with this problem? -Phil

Last reply by halz, January 24, 2005
Occasionnal rough idling and misfire

January 11, 2005 by frankfou999
5 replies

1.9k views
I have a stock '72 with everything original (coil, distributor) and sometimes I have this rough idling, misfire and lack of power. I changed everything from the contact breaker to the leads, the rotor and distributor cap and it happens again. What amazed me is when I pull the lead from certain plugs the engine doesn't react and if I just put the wire wire close enough for the spark to jump on the plug then everything goes back to normal and if I put the wire in place then the rough idling comes back. Any clue ?

Last reply by frankfou999, January 21, 2005
damperdoc

January 21, 2005 by madkaw
2 replies

2k views
I asked for advice from everyone on exploding pulleys so I thought I would follow up with some info. Company known as damperdoc in california will rebuild your damper in 2 days for 90 bucks. A guaranteed used one from a salvage was 70 bucks with the same 35 year old rubber. The guy at damperdoc seems pretty confident of his process and the strength of the rubber. He does engines with a lot more torque then ours and no worrys. He said rpms were not a issue. I'm sending mine off shortly , let you know

Last reply by alordzot, January 21, 2005
Paint code Decal question 1 2

January 19, 2005 by CNIXZGO
12 replies

3.2k views
I'm a bit confused, the paint code decal shown on Zeddsaver.com has the words "Paint Amino Alkyd Enamel" along the bottom, but in my 1978, my worn out original paint code decal has NO words along the bottom. Is one style for earlier 240s? and one for 280s? Or are there two types of paint code decals out there? I want to get one of these repros but i'm not sure which one is correct version for a 78. Thanks, Nick

Last reply by pressedsteel, January 20, 2005
Head Work

January 20, 2005 by biggels_7
0 replies

1.3k views
Hey Guys im just looking for some advice im getting some head work done i ve got a 76/44 cam on a N42 head , i was thinking of getting bigger 46 38 valves and a ,mild port and polish. DOes anyone have any other suggestions or advice on whatg i can do to squeeze a bit more Horsepower out of the beast Its on a balanced L28 cheers biggels

Last reply by biggels_7, January 20, 2005