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1G Top End Rebuild... Need some advice

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Fitzi722

10+ Year Contributor
81
0
Jan 9, 2011
Pittsfield, Massachusetts
So I bought my first DSM about 2 months ago. When I got it, my friend Evan and I thought we would just need to put a new timing belt on, fix the brake lines, and we would be all set. Well here we are two months and an entire top end rebuild later and the car still hasn't left the driveway.

I guess some info about the car will be in order. The previous owner was not by any means intelligent. He abused the car as far as I can tell, which is probably why I am in this situation. Before him the car was owned by a guy who had it running high 11s at the track. Apparently the bottom end was replaced/rebuilt roughly 15K miles ago by that owner. Some of the mods I list are what I have been told were put in by that owner.

Now, when I got the car the top end was a mess. Had significant dropped compression in 2 cylinders (145-125-125-150). The valves and head were disgusting. I've seen a used engine before, but the carbon in this thing was sickening. The cam journals were also scored and pieces inside the intake and exhaust ports were cracked/broken.

In response to the head I ordered a remanufactured head from J&C Enterprises. We rebuilt that head with Crower 272/272 Cams, topline lifters, and Manley Springs and Ti Retainers. We also blocked off the EGR and changed out the fuel injectors to FIC 750CC injectors.

When the car had the old head on it, it would NOT idle at all. Crank - Fire - Die. As of an hour ago the car is back together. It will start and idle now. However there is a pretty noticeable ticking noise coming from the top end. It sounds like cam noise of some kind. I do not have a video (no camera besides cell phone, and the phones speaker sucks).

I know for a fact that I have a boost leak at the J-pipe. That is not where this noise is coming from.

Now, I am wondering if this could be from the lifters not getting enough oil pressure to move correctly? Or if this is something to do with the cams/springs/retainers being broken in for the first time.

I have a short data log from when I started the car the second time tonight. It will be attached.

Any help would be greatly appreciated! :D
 

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Are you still using original lifters? If so then the ticking noise will probably be there forever. Stock DSM lifters are notorious for a fairly loud ticking noise as you are describing.
 
It still sounds like you're describing the lifter tick. Did you prime them before installation?
 
No, there is a technique for priming them. They hold a good amount of oil inside, just putting them in with lube wont do it.

I'm sure that you didn't do this, but don't worry they will be fine. The tick will be there for a while though until they get enough oil retained in them. Alot of them are loud either way for at least a few days.
 
No, there is a technique for priming them. They hold a good amount of oil inside, just putting them in with lube wont do it.

I'm sure that you didn't do this, but don't worry they will be fine. The tick will be there for a while though until they get enough oil retained in them. Alot of them are loud either way for at least a few days.

I had a suspicion it might be something like that. But it is a very unnerving noise. I haven't let it idle for more than maybe 20 seconds because it is very unsettling to hear a mechanical noise like that and not assume its a problem.
 
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That would explain a bit. Not bad for a first time dsm top end rebuild though i must say :D we cruised through that once we had all the parts at my door. Still cant believe it fired. Yayy for backyard engine building!

BTW everyone I'm Evan. Partner in crime in this virgin DSM experience.
 
Why is your Car listed as your email Ev? LOL. List the 240!

Anyways, I guess we will try firing and letting it idle for a bit soon. Datalog everything, and post back with results.
 
I was cruisin through the registration and Chrome's autofill threw my email in the car field LOL We firing it tomorrow? :D
 
Hope so. Remember it did seem to be getting quieter after the second try for a start up..
Glad we stumbled upon this community. Thanks for the info guys.
 
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