madkaw

100LL has a lot more lead then auto leaded gas ever had. What damage it will do ,I'm not sure. When I use to work at an FBO I would fill up my 240z every once in a while(hope my old boss isn't reading this) and the car ran fantastic.

So what about motorcycles!!! Most are overhead cam to shim valve with way more rpms. Are they concerned or is their valve train weight and pressures not as great. Is the cam wear do to inferior metals being used for the cams.Surely oil advances have helped to make up for the losses of certain additives.Definetly an subject worth investigating

Is the "how to rebuild your Datsun Engine" book much better then a shop manual ;surely better then chiltons for references and illustrations. I have the "how to modify " book but know I think I should have gotten the rebuild book to make sure I get the basics right. Saying all that was basically my advice to do it by the book or atleast have a reference to help guide you so you don't miss anything

Great read! Correct me if I am wrong but our cam sprockets don't allow for degree adjustments, it would take a special sprocket to really "degree" our cams. .So would you be just checking to see if you installed the cam correctly?? I did this procedure on my Kawasaki 1000 when I installed Web cams but they had slotted sprockets. This is not a job you just jump into but much to my surprise though, the folks at Web were very helpful and walked me thru the procedure to check my lobe centers.It came down to simple math and reading the dial indicator.

1fastz, just curious what flow ## you've got out of a early e-88. My head is at the shop now and wonder what a base line would be for a mild port and polish on a e-88. My machinist is in new territory with these heads but willing to learn. Any thing else you want to share about the e-88 would be appreciated. So far he has made custom copper berilium seats,S.S. valves-larger 280 valves,new guides. I'm having him install a stage 2 schneider kit. Not sure about C.R. yet Also, anyone cryogenically treating the so called soft cwc cams? Steve

I don't have my book in front of me but I believe the whole idea of doing this mod was to eliminate the possibility if the original plugs from accidently popping out and losing oil pressure. There should be no reason to take these plugs back out so why not epoxy them in.

Not to high jack this thread but I have a similiar ?? I followed the suggested unshrouding procedures in how to modify. What I had a problem with is that i used the headgasket to unshroud the head to the fire ring but when you lay the gasket on the block(l-24), the fire ring extends beyond the bore along the sides where the valves are. Are the head gasket combustion chamber cut out oblong for a reason. Or was this procedure targeted for the larger combustion chambers of the 2.8. I am using the e-88 with larger valves and notched the block.

Take it apart and e-bay it! Actually I could use a good metal headlight bucket-driver side.

call this guy he was very helpful and my 2 row balancer came out great http://members.aol.com/damperdoc/

I looked at my damper closely at it scared me and my machinist. I was having the whole engine assembly balanced and he basically said it was a waste to balance it . Anyway, I sent it to the Damper Doc and had it rebuild,it looked great. I asked if he had any failures with his rebuild and he said no. I asked if rpms were a issue and he said only massive torque would tear it up.I believe he charged 79$ with a ten day turn around. I opted to rebuild rather then a single groove incase I could put Ac back on the car utilizing the second groove

You don't have to do anything to the pistons. You just don't want to notch far enough down that the top ring would reach it. When I get my block back I will try to measure somehow to give you an idea how much.

Cobraz, send me your e-mail and I will send you pics,i just did this but haven't posted pics to web site. I just did the bigger valve deal to my 240 so I can help you out Steve

My machinist was impressed with the quality of these valves. But he wasn't impressed with my research, since I bought these for my 2.4 block-oopps(i'm just a back yard mech). Needless to say we had some clearance issues so we wound up turning down the the head to a 35 and notching the block.There is no way they would have gone in my 2.4. I also bought the guides from the same guy and again my machinist liked the concentricities of the guides. As far as seats go, he made his own ber.copper to match the valves!

I am doing a e-88 the same way on a 2.4 block with .40 over pistons with a 480 lift cam and you have to put reliefs in the block or the exhaust will hit the cylinder. Be careful because a lot of guys are using the 2.8 block so mention of relief is needed but you WILL have to relief a 240 block with bigger valves . This is also verified in How To Modify Datsun book. Good Luck

I should elaborate that my engine is not stock. I am putting 1200$ in a e-88 head and the block will be .40 over and all the other upgrades to make the engine run well.(headers, electronis ign. SU's, balanced engine). I would like to HOPE for horsepower # close to a stock zxt.

Will the wide spacing of gears be that much of a deal for an everyday driver?I want to use this tranny with such few miles on it. Plus , further down the road the engine might see an upgrade . What would be ,or is there a counter solution for the wide spacing.

i realize this question is subjective to many factors but I will ask anyway.I bought as bw-5 speed from a 82zxt that had 60k miles on it. This was lady owned and beautiful until it crashed. Under normal useage how many mile would the clutch be good for. I will be putting this behind a modified 2.4na and the clutch looks great. Am i being to cheap to think about using a used clutch assembly or do they usually last many more miles. Is there a tell tale sign for abnormal or excessive wear on the assembly. thanks steve

I know; everyone is already to jump on the search wagon ,and I have searched.What I want to know is; has anyone CUT the maxima brackets off instead of pulling stubs and was there any problems with that. I am going to the JY and I would think it would be cheaper to have them cut-off the brackets then pull. Since the MM and MSA brackets are only 3 bolts I would think it would not affect the integrity too badly .

Thanks Jon for the pic, that helps me picture in my head the whole notch process. I would think that my machinist has been down this road before but he is not familiar with these older Nissan engines. Since this isn't a stock rebuild i am trying to cover all the basis with him so we do it right the first time. Thank God there is some great sites and help from you guys. I thought (my memory sucks)that when I checked the original valve sizes that my head had the larger ex valves but smaller in. valves(165). The head was off of a late model 71.So I guess what i am babbling for is I thought the interference would be the intake side

Anybody have a pic of the notching.

I have unshrouded the chambers, thanks. I brought this up to my machinist to look at and I appreciate all the advice. Sounds like the definitive answer is to plop the head on there and make sure nothing hits and then see the advantages of possibly notching. I think I must of read about this in my "How to Modify" your datsun book which the machinist has right now .

I've been searching but can't seem to find a definitive answer.I am beefing up my 240 motor and am wondering about notching my block. I have put the 280 valves in my e-88 head with a stage 2 cam and my pistons are .40 over. Do I still need to allow for relief in the cylinders. I thought I read that if you go atleast 10 over on pistons your okay but I can't find similiar info. Anyone steer me in the right direction. thanks steve

I wish the railroad would give me as much time as it seems you have to mess around with the Z. Its sounds like it gonna a be a killer.

Thanks olie05, I know 200 is very optimistic and I do intend on raising CR to the premium pump gas limit. IF later down the road i put together a stroker with my worked e-88 I wonder what the hp would be for the increased displacement?MAN- i wish I kept that turbo

Okay guys, I know this is small time for you guys but I was wondering if my 2.4 is capable of 200rwhp. I know I should of done a 2.8 and I won't even admit that I sold a 2.8trbo that i had (oops), but I had already thrown money at the original motor before I found the turbo car. I am doing a total rebuild with .40 over pistons and balancing the complete assembly. I am oversizing to l28 valves on the e-88 head with mild porting and port matching. A stage 2 cam, stainless valves, header, electronic ign,dual exhaust, SU's. I know if I was wanting bigger ## I should have gone a different direction but I think 200hp would make me very happy with this car. Maybe the next project I will have the knowledge from all you guys to go for big horsepower.