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  • i am back, and with some good news..

    i had bought 2 gaskets and placed it below the block.
    the decrease in compression is clearly visible whenever i kick, it feels much more like normal now..

    initially when everything was done and attached, THE TIMING WAS FINALLY RETARTED, the CARB WAS FINALLY TUNED BY THE MECH ITSELF, the mech started the engine, there was an unusual noise, couldn't figure it out as from where, but it was from the head itself..

    he did a smart thing
    he placed the tip of the screw driver to the head and the base of the screwdriver on his ear to examine where the sound comes from . like a doctor does with a stethoscope

    it did work though, he said the tappets are loose, ride it for a few days, if it still persists, I'll tighten it..
    i denied it and asked him to finish it off by tightening it at that very moment..

    he did so, and we again started the stuff, there was still some unusual noise, again followed the same method, couldn't make it out...

    i heard it and felt as if the TIMING CHAIN is making the noise .....
    i asked the mech to check the timing chain tension-er, he opened it, and BINGO !!!!!!!!!

    that was the whole problem, firstly it was fitted UPSIDE DOWN by the previous mech, and SECONDLY it wasn't opened after fitting it in, so we did it, and guess what...

    a smooth and free revving sound is what we heard....

    we put the remaining stuff back and i RODE for a while...

    bike is smooth, strangely the MID-RANGE is better than before...
    it feels somewhat like a karizma when we start from 0...
    i came back, the mech rode it, he richened the A/F a bit more and i was off to go...

    the difference !!!

    bike is MUCH MUCH smoother than the previous setup.
    it Feels like stock, apart from the Vibes..
    it pulls gently but doesn't turn Crazy after 45-50, it want to revv good, and the power is distributed across the revv range evenly...

    if feels much more like stock with a more powerful engine and some extra vibes which disappear after 60....

    i am very happy and satisfied that my trusty old fiero is doing great again....
    i believe its a permanent solution, seriously guys it feels much more like stock, bike is not HARSH AT ALL....

    thank you soo much PSR, GIXXER, for helping me get it right...

    i will keep updates going !!

    1 question, should i rip it to 120 kmph asap or little by little ??
    Giving a lot to a fiero.
    Expecting a lot from a fiero.

    Comment


    • @Nanotech

      Buddy, just tell me one thing first.Do you mean 2 gaskets on top of the bore and in between the head ,or 2 packings under the bore?
      Life begins, once you hit the power band !!

      Comment


      • @Nanotech

        Pull out the plug and put it's pic here.Then if the plug looks like it's running rich,then you can rip the bike.
        Life begins, once you hit the power band !!

        Comment


        • 2 packing under the bore...
          Giving a lot to a fiero.
          Expecting a lot from a fiero.

          Comment


          • Originally posted by NANOtechnology View Post
            i am back, and with some good news..

            i had bought 2 gaskets and placed it below the block.
            the decrease in compression is clearly visible whenever i kick, it feels much more like normal now..

            initially when everything was done and attached, THE TIMING WAS FINALLY RETARTED, the CARB WAS FINALLY TUNED BY THE MECH ITSELF, the mech started the engine, there was an unusual noise, couldn't figure it out as from where, but it was from the head itself..

            he did a smart thing
            he placed the tip of the screw driver to the head and the base of the screwdriver on his ear to examine where the sound comes from . like a doctor does with a stethoscope

            it did work though, he said the tappets are loose, ride it for a few days, if it still persists, I'll tighten it..
            i denied it and asked him to finish it off by tightening it at that very moment..

            he did so, and we again started the stuff, there was still some unusual noise, again followed the same method, couldn't make it out...

            i heard it and felt as if the TIMING CHAIN is making the noise .....
            i asked the mech to check the timing chain tension-er, he opened it, and BINGO !!!!!!!!!

            that was the whole problem, firstly it was fitted UPSIDE DOWN by the previous mech, and SECONDLY it wasn't opened after fitting it in, so we did it, and guess what...

            a smooth and free revving sound is what we heard....

            we put the remaining stuff back and i RODE for a while...

            bike is smooth, strangely the MID-RANGE is better than before...
            it feels somewhat like a karizma when we start from 0...
            i came back, the mech rode it, he richened the A/F a bit more and i was off to go...

            the difference !!!

            bike is MUCH MUCH smoother than the previous setup.
            it Feels like stock, apart from the Vibes..
            it pulls gently but doesn't turn Crazy after 45-50, it want to revv good, and the power is distributed across the revv range evenly...

            if feels much more like stock with a more powerful engine and some extra vibes which disappear after 60....

            i am very happy and satisfied that my trusty old fiero is doing great again....
            i believe its a permanent solution, seriously guys it feels much more like stock, bike is not HARSH AT ALL....

            thank you soo much PSR, GIXXER, for helping me get it right...

            i will keep updates going !!

            1 question, should i rip it to 120 kmph asap or little by little ??
            ================================================== ====

            Congratulations NANO bro!!! on solving the issue. Trusty Old Fiero is back in action again. Now in simple layman's words tell us exactly what was wrong and what you did to solve the problems.

            Comment


            • Originally posted by NANOtechnology View Post
              2 packing under the bore...
              So you finally got it right... good for you..Don't rip the bike and engine.You haven't settled the engine yet.Wait another 800 to 1K Kms.Meanwhile get your compression checked,and spark plug examined. The centre electrode must be light brown in color AFTER RIDING FOR 20 KMS AT MODERATE SPEED(40 to 60 kmph).If it is white then you are running lean..if it is black then it is rich mix .
              When Was The Last Time,You Did Something For The First Time.

              Comment


              • Originally posted by chief ashman View Post
                ================================================== ====

                Congratulations NANO bro!!! on solving the issue. Trusty Old Fiero is back in action again. Now in simple layman's words tell us exactly what was wrong and what you did to solve the problems.
                thanks chief !!

                well to be honest, the issue was very much complicated.
                it was a mixture of Timing + Carb tuning + VERY HIGH COMPRESSION + timing chain tensioner problem.

                whenever i used to rip my bike, after a while it used to go mad and make a very bad noise.
                it felt as something hard was hitting somewhere.

                i agree that this was due to the head which wasn't sorted right which means wasn't expanded, and maybe because of the CARB too as I put it up by myself...

                so finally what i did was open it up, checked if anything is wrong or not, there was nothing wrong inside, so i got the compression decreased by increasing the number of gaskets below the block...

                and very very finely got the timing adjusted and got it RETARTED as gixxer said from day 1 with carb tuning and so on.

                now its running very well, but it isn't as INSANE as it was with ultra high compression, but its smoother and still very much powerful than stock..

                i hope i summed it up well.

                Originally posted by psr View Post
                So you finally got it right... good for you..Don't rip the bike and engine.You haven't settled the engine yet.Wait another 800 to 1K Kms.Meanwhile get your compression checked,and spark plug examined. The centre electrode must be light brown in color AFTER RIDING FOR 20 KMS AT MODERATE SPEED(40 to 60 kmph).If it is white then you are running lean..if it is black then it is rich mix .
                i do wish that this is the end of all my problems.
                i have ridden 100 kms so far after new remake.
                but i feel the bike gets heated up pretty quickly.

                however it doesn't feel the engine is heated when i ride it, but whenever i stop at a signal, i feel the engine's heat...

                its quite a lot i can say, and does heat up quickly too, but it doesn't behave unusual as fiero always did when heated, feels smooth though, is this normal ??
                Giving a lot to a fiero.
                Expecting a lot from a fiero.

                Comment


                • Nano i don't own a Fiero so I am unable comment on its running or heat..which is subjective.Check the Plug .It will tell you more than anything else on your engine running condition.After seeing it only I confirmed the pre-ignition and heat problem..and so asked you to place the 2 gaskets below the bore to decrease the compression. So please read the plug and post.Was the ignition also advanced ? how did u do it ?Last time I inquired you said you had not done it.
                  When Was The Last Time,You Did Something For The First Time.

                  Comment


                  • If the engine is getting hot now...more than normal,then check :

                    1.AFR
                    2.Compression

                    With stock timing there shouldn't be any problem on that front.
                    Read the spark plug...if it is white or light tan your AFR is lean..It should be a darker tan
                    When Was The Last Time,You Did Something For The First Time.

                    Comment


                    • @Nanotech

                      As mentioned before ,engine heating up is an indication of something not being right or indicating increase in compression(which is good)after modifications.But since you reduced compression,it's wise to check the plug as psr mentioned.Knowing the way you ride,i would suggest that you get the a/f richened till the plug turns black in city riding conditions.
                      Life begins, once you hit the power band !!

                      Comment


                      • Nano what ever happened to your bike...Are you driving it or is it in a basket. You haven't given a feedback on the heat problem and Plug reading.
                        When Was The Last Time,You Did Something For The First Time.

                        Comment


                        • My bike is under my girlfriend's building from yesterday, I'll get it back home tonight, and the pics might come tomorrow ASAP.

                          the heat problem as much as i know is there only on revvs.
                          when the silencer was not yet put up and the bike was started, i kept my hand on the exhaust's outlet and when it was idling it felt very normal with no heat at all.

                          my hand was still there and the mech REVVED the engine a bit, as soon as he revved, my hand almost burned.
                          this was hardly seconds after re-attaching the entire block that whenever the bike was REVVED it gave out high heat.

                          on idling it doesn't give out heat afaik.
                          so i didn't try the same process after a while as i had already faced the consequences.

                          maybe this helped you all to understand, however I'll post the pics tomorrow for sure.
                          Giving a lot to a fiero.
                          Expecting a lot from a fiero.

                          Comment


                          • here are the spark plug pics as promised.
                            i ride for about 10 mins before and then clicked the pics, so it was difficult to remove the plug as the engine was quite heated up.

                            i rode the way i always ride, a bit aggressive...
                            however even yesterday night when i rode before i covered a total of 35kms at good speeds, highways and was 80+ on the speedo.
                            bike seemed very responsive and its getting better and better day by day, maybe its just in my head.

                            however I've clicked the pics with as well as without the flash to show you guys a clear picture.

                            I've also clicked the pic of the extra packing below the block with oodles of three bond to avoid compression leakage as suggested by PSR.

                            here comes the pics

                            the pic with flash..






                            the one without flash.






                            another one without flash







                            the extra packing pic






                            1 more thing that i would like to highlight is that the plug is not evenly colored, its slightly brown from 1 side, and slightly less brown from the other (i am talking about the inner white ring) its evident in the pictures, however as i was carrying my head to many bore places, so some might have touched the plug's top, my mech washed the head with petrol before installing with plug attached.

                            i am running rich fuel, i feel it, if i go even 3/4th round more towards richer mixture in the fuel screw, bike turns off.

                            half round more itself makes the bike tending to turn off.

                            waiting for judgment.
                            Giving a lot to a fiero.
                            Expecting a lot from a fiero.

                            Comment


                            • @Nanotech

                              Still very lean buddy. The engine heat itself is telling the same,richen it further till the whole of center electrode turns dark.That's the normal pattern on fieros ,that is the tan color on one side and light on the other.

                              Have you put both of the foam covers back on the air filter? If not then put it back immediately.
                              Life begins, once you hit the power band !!

                              Comment


                              • I think your bike's running lean,keep an eye on the oil levels,since your bikes heating up.Are you using the rtr 180 block?
                                Socha Toh Locha.

                                Comment

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