<![CDATA[DSM Forums - Cylinder Head & Short Block]]> http://www.dsmtuners.com/forums/ en Sat, 21 Nov 2009 00:40:06 GMT vBulletin 60 http://www.dsmtuners.com/forums/images/misc/rss.jpg <![CDATA[DSM Forums - Cylinder Head & Short Block]]> http://www.dsmtuners.com/forums/ Wossner 8.0:1? http://www.dsmtuners.com/forums/cylinder-head-short-block/355075-wossner-8-0-1-a.html Fri, 20 Nov 2009 01:30:43 GMT So I was set on getting 8.3:1 Wiseco pistons for my build, but then I found Wossner pistons that are supposed to be a bit better than the Wisecos, they are compared to the Wiseco HDs, but they only come in 8.0:1. This is coming from stock 8.5:1, will there be such a noticeable difference in... So I was set on getting 8.3:1 Wiseco pistons for my build, but then I found Wossner pistons that are supposed to be a bit better than the Wisecos, they are compared to the Wiseco HDs, but they only come in 8.0:1.

This is coming from stock 8.5:1, will there be such a noticeable difference in going down to 8.0:1, such as off boost power/spool time, and has anyone heard anything about Wossner pistons? I haven't been able to find any info/results about them being used in DSM applications.

Now I'm just confused again and don't know what to order haha

Thanks. ]]> RadDsm http://www.dsmtuners.com/forums/cylinder-head-short-block/355075-wossner-8-0-1-a.html 2G hubcentric dampner http://www.dsmtuners.com/forums/cylinder-head-short-block/355052-hubcentric-dampner.html Thu, 19 Nov 2009 21:29:03 GMT While performing a timing belt job on a 97 gsx auto I noticed the harmonic dampner is hubcentric.
I don't recall seeying this before. When did this start? ]]> Cesar http://www.dsmtuners.com/forums/cylinder-head-short-block/355052-hubcentric-dampner.html 1G 4g63 n/a bottom end.. http://www.dsmtuners.com/forums/cylinder-head-short-block/355023-4g63-n-bottom-end.html Thu, 19 Nov 2009 12:55:28 GMT Ok well I began having troubles with my 4G63T bottom end and finally said hell with it and bought a parts car. The car I bought however is a N/A. I know the 2 main differences in the 2 bottom ends are N/A has no oil squirters (which I dont use anyways so no big deal) and the N/A pistons are higher... Ok well I began having troubles with my 4G63T bottom end and finally said hell with it and bought a parts car. The car I bought however is a N/A. I know the 2 main differences in the 2 bottom ends are N/A has no oil squirters (which I dont use anyways so no big deal) and the N/A pistons are higher compression.

My question is does anybody know how much a stock 6bolt N/A bottom end can handle with new bearings obviously and ARP Rod bolts? My car is making just around 350hp..

Any input would be appreciated. Thanks ]]> 91 TSi GP http://www.dsmtuners.com/forums/cylinder-head-short-block/355023-4g63-n-bottom-end.html Split thrust bearings??? http://www.dsmtuners.com/forums/cylinder-head-short-block/354828-split-thrust-bearings.html Tue, 17 Nov 2009 06:06:29 GMT I didn't pay more for the thrust washer set on my motor build like these EXTREME PSI : Your #1 Source for In Stock Performance Parts - ACL Aluglide Thrust Washer Set: Mitsubishi Eclipse 1997-1999 7-Bolt

Should I have? It's going in my 98 block with a 4g64 brand new crank. Also, I bought some ACL race bearings and I'm not sure if they were made for the 93-96 or 97-99, does it matter that much on my car with that block and that crank? I want to start up my car tomorrow, but not of it's going to break everything. Thanks,

Josh ]]> 420a-t http://www.dsmtuners.com/forums/cylinder-head-short-block/354828-split-thrust-bearings.html head bolts http://www.dsmtuners.com/forums/cylinder-head-short-block/354756-head-bolts.html Mon, 16 Nov 2009 16:24:19 GMT I am rebuilding my head due to my awesome balance shaft belt breaking on me. My question is do i have to buy the mitsu specialty tool remove the factory head bolts or is there another way to take them out? I am rebuilding my head due to my awesome balance shaft belt breaking on me. My question is do i have to buy the mitsu specialty tool remove the factory head bolts or is there another way to take them out? ]]> regulator213 http://www.dsmtuners.com/forums/cylinder-head-short-block/354756-head-bolts.html JNZ Shortblock Pull Apart? http://www.dsmtuners.com/forums/cylinder-head-short-block/354753-jnz-shortblock-pull-apart.html Mon, 16 Nov 2009 16:09:58 GMT I recently purchased a 6-bolt turbo fully built shortblock from a guy who bought it from a guy who had it built by JNZ Tuning in early 2008. Since then the motor has not been cranked there are no miles at all. *My question is should i pull this motor apart to check the ring gaps etc?* My friend... I recently purchased a 6-bolt turbo fully built shortblock from a guy who bought it from a guy who had it built by JNZ Tuning in early 2008. Since then the motor has not been cranked there are no miles at all. My question is should i pull this motor apart to check the ring gaps etc? My friend had a JNZ motor go after 1,800 miles due to a ring gap error. Some people say yes others say just put it in. I think it may be a waste to take it apart since im not the original owner of the motor, and if there is a problem I'd be screwed anyway. what are your thoughts and opinions.

thanks ]]> RT-AWD http://www.dsmtuners.com/forums/cylinder-head-short-block/354753-jnz-shortblock-pull-apart.html Blown head gasket. http://www.dsmtuners.com/forums/cylinder-head-short-block/354718-blown-head-gasket.html Mon, 16 Nov 2009 03:40:10 GMT Well the Head gasket on my 92 gs took a crap. I need to know what a fair price on getting the head decked is. Well the Head gasket on my 92 gs took a crap. I need to know what a fair price on getting the head decked is. ]]> ShawnsGarage http://www.dsmtuners.com/forums/cylinder-head-short-block/354718-blown-head-gasket.html Can you guess what this is? http://www.dsmtuners.com/forums/cylinder-head-short-block/354642-can-you-guess-what.html Sun, 15 Nov 2009 05:05:46 GMT Image: http://i35.tinypic.com/13zs83o.jpg Can you guess what this is??? Thats right, you got it! An engine rebuild....:notgood: I was driving home tonight and while boosting in third gear i heard a loud pop and the car died. I thought one of my IC pipes came loose again so i got out to look...

Can you guess what this is???

Thats right, you got it! An engine rebuild....:notgood: I was driving home tonight and while boosting in third gear i heard a loud pop and the car died. I thought one of my IC pipes came loose again so i got out to look at them and they all looked fine??? after looking around a little longer It just came to me to to look at the timing belt and sure enough. There it was sticking out of the top of the timing cover, The 4g63's beloved balance shaft belt. And now my car wont even start. Anybody throwing out a 7-bolt long block? :D LOL ]]> regulator213 http://www.dsmtuners.com/forums/cylinder-head-short-block/354642-can-you-guess-what.html Help identify aftermarket cam http://www.dsmtuners.com/forums/cylinder-head-short-block/354628-help-identify-aftermarket-cam.html Sun, 15 Nov 2009 02:09:35 GMT I have looked all over the site including the big cam identification thread and still do not know what these cams are. They both (intake and exhaust) are marked the same. Near the cam gear end there is a capital B and the small dots aligned in a triangle, when spun around the other side it... I have looked all over the site including the big cam identification thread and still do not know what these cams are. They both (intake and exhaust) are marked the same. Near the cam gear end there is a capital B and the small dots aligned in a triangle, when spun around the other side it stamped with a sideways capital D and a right side up number one. Near the other end of the camshaft it is marked with the same capital B and when spun around to the other side has the number 25. This does not coincide with any of the stock cam markings. Can any one help? Even the manufacturer could be useful. Thank you.
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]]> LTQuick http://www.dsmtuners.com/forums/cylinder-head-short-block/354628-help-identify-aftermarket-cam.html Rounded out Head Bolt extraction help http://www.dsmtuners.com/forums/cylinder-head-short-block/354597-rounded-out-head-bolt-extraction-help.html Sat, 14 Nov 2009 18:49:51 GMT Ive searched and searched but this seems to be the first question about a head bolt. Im trying to pull the head of my car and got all but one of the head bolts cracked loose. The last one I get to is already rounded out, and I have no hope of removing it with the 10mm star/allen socket. ... Ive searched and searched but this seems to be the first question about a head bolt.

Im trying to pull the head of my car and got all but one of the head bolts cracked loose. The last one I get to is already rounded out, and I have no hope of removing it with the 10mm star/allen socket.

Its the bolt to the far left exhaust side.

I went to sears this morning and bought a set of rounded bolt removers, and they seem like they will grip the round outside edge of the head bolt. Only problem is its too big to fit in the tight space. The extracters are pretty big and Ive even removed the camshaft to free up some space but the side of the head and the valve spring are in the way. Maybe if I removed the valve spring I could squeeze the extractor in there but I dont think it would have enough room to get back out and I have no way of removing the valve spring.

Does anyone have any other ideas on how to remove this rounded out head stud? I think if I could weld a bolt ontop of the head bolt I could get it but there is the space issue. The bolts arent threaded into the head so it COULD be drilled but that is risky and this is a good head and I really dont want to mess it up.

Just wondering if anyone else has dealt with a rounded out head bolt and how they got it removed. ]]> jimmythesaint http://www.dsmtuners.com/forums/cylinder-head-short-block/354597-rounded-out-head-bolt-extraction-help.html bad vibes http://www.dsmtuners.com/forums/cylinder-head-short-block/354389-bad-vibes.html Thu, 12 Nov 2009 03:39:12 GMT Ive been having alot of problems with the car since the head install. IM getting a nasty vibration that comes on right at 3k rpms and goes away around 3800.Its backing out bolts left and right.first it was the p.s. pump next the alt. and today the brace for the driver side axel came off causing a... Ive been having alot of problems with the car since the head install. IM getting a nasty vibration that comes on right at 3k rpms and goes away around 3800.Its backing out bolts left and right.first it was the p.s. pump next the alt. and today the brace for the driver side axel came off causing a seal to blow which oil soaked my clutch and now thats slippin:mad:I put on a new mitsu crank pully but that diddent help.I had my pal(a well seasond wrench) do the belt and tension part,Just wondering if he diddent get it adjusted properly.Would it cause that much vibrations? Any help would be great! ]]> kams1gsx http://www.dsmtuners.com/forums/cylinder-head-short-block/354389-bad-vibes.html valves leak after valve job http://www.dsmtuners.com/forums/cylinder-head-short-block/354387-valves-leak-after-valve-job.html Thu, 12 Nov 2009 03:21:28 GMT Should the valves leak air after a valve job is performed? Should the valves leak air after a valve job is performed? ]]> cruisintalonawd http://www.dsmtuners.com/forums/cylinder-head-short-block/354387-valves-leak-after-valve-job.html Compression 8.3:1 , 8.5:1 or 9:1 http://www.dsmtuners.com/forums/cylinder-head-short-block/354340-compression-8-3-1-8-5-1-9-1-a.html Wed, 11 Nov 2009 17:14:44 GMT Hi guys , I would like to clear my doubt on the piston compression choice my current specs *FP Green FP 2 cams Stock 7.8:1 1G vr4 block MMC MMLS HG * it got 363WHP on dyno dynamics , 30psi of boost , 14* degree max , 93octane fuel, should be about 400 on dynojets Hi guys , I would like to clear my doubt on the piston compression choice
my current specs

FP Green
FP 2 cams
Stock 7.8:1 1G vr4 block
MMC MMLS HG

it got 363WHP on dyno dynamics , 30psi of boost , 14* degree max ,
93octane fuel, should be about 400 on dynojets

I am currently deciding on my pistons for my new built
what I have in my mind would be
ARP Head & Main Studs
Scat Rods
King Bearings
Cometic 1.3mm HG

should I run on 8.3:1 , 8.5:1 or should i run on 9:1 compression for boost levels of 30-32psi on 93 octane.

I know you would ask me to search, but i am having mixed reviews, dsmtalk guy say it wouldnt even pass 16psi on 8.5:1 , some evn say 9:1 pump gas and 30psi dint have a knock. What would u say ?

Thanks a million ]]> thilaksharma http://www.dsmtuners.com/forums/cylinder-head-short-block/354340-compression-8-3-1-8-5-1-9-1-a.html Installing Head- Questions http://www.dsmtuners.com/forums/cylinder-head-short-block/354242-installing-head-questions.html Tue, 10 Nov 2009 06:16:01 GMT In the next few days I will be installing my head onto my short block. Right now just the crank and pistons are in, and I think my next step would be putting the head on, followed by the oil pump front case and timing belt kit. What is the correct way to put the head on the short block? What... In the next few days I will be installing my head onto my short block. Right now just the crank and pistons are in, and I think my next step would be putting the head on, followed by the oil pump front case and timing belt kit. What is the correct way to put the head on the short block? What orientation should the pistons be? What orientation should the cams/cam gears be? I will be using arp studs with a cometic headgasket. I know this is a very debated topic, but should I spray my cometic with permatex hg sealer? I had .005 taken off the block and .012 taken off the head, so things "should" be flat and true. I am leaning towards yes unless someone can persuade me not to. Any other tips for putting the head on a fresh motor? ]]> DeNoZZo http://www.dsmtuners.com/forums/cylinder-head-short-block/354242-installing-head-questions.html help with some shop QUESTION http://www.dsmtuners.com/forums/cylinder-head-short-block/354179-help-some-shop-question.html Mon, 09 Nov 2009 06:35:45 GMT will my motor is in the shop and i just want to make sure that i ask the right questions, like if they have ever done a 4g63 motor before, if anyone can help me ask the right questions that would be a big help..... one more think i picked up a block that had a BSEK in it and i was wanting to... will my motor is in the shop and i just want to make sure that i ask the right questions, like if they have ever done a 4g63 motor before, if anyone can help me ask the right questions that would be a big help.....

one more think i picked up a block that had a BSEK in it and i was wanting to know if i will have to put in another one with the shop redoing the motor?? ]]> 4g63turbo84 http://www.dsmtuners.com/forums/cylinder-head-short-block/354179-help-some-shop-question.html