itsLeon

Just looked at the views on this topic and i guess some bot is going wild. Any admin wanna give some insight. BTW. Tomorrow no update about the engine but gonna work on the software part. We gonna try the following: - pops and bangs (allready achieved but can always be better) - Shooting flames - Ghost cams. Al this on the stock ECU without expensive licenses.

Im interested in what your gonna find what might cause the lose in power.

Also small update: Yesterday we measured the piston to valve clearance using the clay (play doh) method. We have around 5.8mm clearance so everything is good. Now we are gonna build the engine for good. Also note to self. Turn the cams to correct way when installing the timing belt or else the measurement will be off.

We didnt measure any distortion but i think the previous owner did some work on it (i bought the parts from a well know dutch engine/car building company) What JWT cams did you buy? c8? Of the ACL question. I bought the ACL Race Series Main & Rod Bearing Set w/ Thrust Washers.

I don't know for sure because i was not around when my friend installed them so i would have to ask him. But the fact he is very and i mean very secure and i didnt hear anything from him about it means it was al good. In fact. But i will ask him when i speak to him again. But i don't expect any problems for the reason i have seen many engine's build here with ARP studs and never heard of it on the VQ engine.

So i found time to update this topic and a lot has been done in the time. Main bearings from ACL Main bearings clearance measured and confirmed Main studs from ARP Thrust washers from ACL Thrust clearance measured and confirmed Eagle Rods Rod bearings from ACL Rod bearing clearance measured and confirmed Rods balanced Cosworth pistons(high compression) Piston to wall clearance measured and confirmed Pistons(en ringpack) balanced Piston rings gaps measured and adjusted where needed Supertech oil seals Cat cams springs Cat cams lash caps (to raise buckets) Cat cams race cams(intake: 290 duration 12mm lift, exhaust 274 duration 11mm lift) Cam oil clearance adjusted Valve clearance corrected Deck clearance measure Balanced everything including the bank account! Todo for next time: pre lubricate heads with molly and oil measure piston to valve clearance create self and oil galley gasket What we learned: Apparently there are letters on the brackets that hold the cams. Ow an i also bought a roll cage...

Can you explain why it would be beneficial for an FI? The reason you would put that on an NA car is to improve the volumetric efficiency or so it claims. With a good modern turbo that starts generating boost at around 2500rpm the improvements to your volumetric efficiency with the spacer would be so small if at all that i would personally save the money for a good drink. But thats just me. Edit: So i did a whole lot more theorycrafting and talking about plenum spacers and FI and we came to the following conclusion. If you can increase the CFM of the plenum with a plenum spacer and will not hit an obstruction like the heads/cams than you might see an increase in power output this is for both NA and FI. I will stand by my earlier argument that you won't see better performance on an FI car with a spacer. But that is based on that i can't find any dyno run on an FI car with and without plenum spacer and i yet have to find all the CFM numbers on the plenum with or without spacer.

Well the Z1 Plenum spacer is kinda useless if you go turbo/supercharger.

Nice! Will you check to pistons to valve clearance? And if so how?

Looks good! I see that we are in same steps of building, just need to update my topic. What kind of compression pistons are that?

Yeah i agree that they are better for my application around 100 grams lighter then the Pauters. While i agree that balancing as a hole is the way to go my bank account says no...

Yeah will try to do that.

So i changed the Pauter rods for some Eagle rods and can continu to build te engine. Do need todo the rebalancing part all over again...

So far only the crank and rods/pistons. Still not 100% perfect but for now more then enough. The difference between the lightest and heaviest piston/rod combo is 0.3 gram. Still need to order a new flywheel/clutch Also quick question. The clearance of the bearing is in the tight range (0.0014 - 0.0015) and i was thinking with that clearance to have an 5w20 engine oil but would you suggest something other?

New update: Balancing of the rods and pistons are done Gapping the pistons rings are done Fitting all the rings are done Then we found out the connecting rods don't fit the pistons... Well that sucks (small end is to wide of the rod) Anyone interested in pauter rods?

Well that could work!

Mmm tough one. I would say silver because all your black parts are on the lower part of your car. But black could work with a black roof?

Small update: Tried to balance the connecting rods within a 0.1 gram and failed (need some special equipment) now gonna try to balance the connecting rods and pistons so the combination of those 2 are the same. Also balance them around the cilinders so that the weight is not only on one side.

Car looks nice!

My buddy has them on his TT build but they seem to cool less then the OEM ones.

Oke small change of plans. Me and my friend will be taking a couple of days off in the beginning of november to finish the engine building so we expect to start tuning the car on the dyno around december.

Yeah im eager to. Tonight i will be working on balancing the connecting rods and the last missing bold came in. But i also have to get a car of the dyno and drive to gas station because its out of fuel and trying to make a ghost cam tune on a stock ECU without uprev.

Well yeah i know what you mean. Well the plan is that the engine building is finished around the end of december. Have it in the car in Januari and tune the car in februari. So many other projects also coming in so don't have all the time to build

Nice! i hope it all works according to plan. Im currently balancing the connecting rods and waiting on the last bolt to come in (was missing a ARP connecting rod bolt).

Nice! what kind of car are you looking for? my daily is a peugeot 107 :P Yeah and 3 n/a build at the same time how awesome! Let keep each other up-to-date and maybe we can help each other out.